The ACHR NEWS spotlights the industry’s latest commercial heating products below. The manufacturers provided us with a brief description of features included with each product. For more information, please contact the manufacturers or their distributors. Contact information is available at the end of each product entry.

Serviceability features: Slide-out access for filters, economizer, supply fan, and energy recovery wheel. Hinged access doors with lockable handles for easy servicing of all sections of the unit. Readily accessible compressors and control components. Color-coded wiring diagrams allow fast connection identification and analysis and thus a reduction in service time and cost. Individual components and wires are also labeled for quick circuit evaluation.

Noise-reduction features: Double-wall, rigid, polyurethane foam-injected panel cabinet construction dampens radiated compressor and fan sound. Direct drive fans are available with either VFDs or ECMs for variable airflow control and reduced fan sound. Optional compressor sound blankets.

IAQ equipment supported: UV lights for coil cleaning or for single-pass air disinfection. Stainless steel drain pans are double-sloped to ensure positive drainage and prevent microbial growth. Airflow monitoring and economizer CO2 override are available to promote indoor air quality. Double-wall panel construction inhibits microbial growth.

Thermostat compatibility: Requires a special thermostat.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: RQ Series rooftop units with inverter-driven variable-speed compressors offer load-matching cooling and heating with improved part-load efficiency. The variable-speed heat pump units allow for full heating at 0°F ambient by using higher speeds on the compressor at the lower ambient temperatures. Energy-efficient features such as microchannel condenser coils, factory-installed AAONAIRE energy recovery wheels with total or sensible energy recovery, and direct-drive backward curved plenum fans.

Warranty information: Standard two-year parts and five-year compressor warranty. Optional five-year or 10-year parts warranty. Standard 15-year aluminized or 25-year stainless steel heat exchanger warranty.

Special installation requirements: Manufacturer did not specify.

Contact: AAON Inc., 918-583-2266; www.aaon.com.

With Virtuoso2 high turndown system

Serviceability features: The service friendly KN-Series features full access to the control panel, burner, and all components.

Noise-reduction features: Sound attenuated blower.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The KN-Series uses the durability and heat retention capabilities of cast-iron heat exchangers with state-of-the-art air/fuel delivery systems and the HeatNet control platform for maximum efficiency and durability. The new Virtuoso2 high-turndown system expands the KN’s turndown ratio to 10:1.

Warranty information: KN-Series heat exchangers carry a 25-year non-prorated warranty covering materials and workmanship against failure due to condensate corrosion and thermal shock. One year on parts and labor. If utilizing HeatNet Online, warranty on parts is extended to two years.

Special installation requirements: Installation per installation and operation manual

Contact: Advanced Thermal Hydronics, 413-564-5779; www.knseries.com.

Serviceability features: Available in 3-, 4- and 5-ton sizes for application flexibility. 230-volt operation. Easy access to service valves. Only two screws to access control panel. External high and low refrigerant service ports.

Noise-reduction features: Quiet operation (as low as 69 dBA). Units are equipped with Copeland Scroll compressors and isolation compressor grommets to minimize sound. Compressor sound blanket standard.

IAQ equipment supported: Compatible with most industry IAQ offerings.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Energy Star qualified. Up to 16 SEER and 9 HSPF efficiency ratings. Scroll compressor provides reliable single-stage, three-phase cooling for improved temperature and humidity control. Galvanized steel construction protects unit against extreme weather.

Warranty information: For commercial applications, five-year limited warranty on compressor; one-year limited warranty on all other parts. Please see warranty certificate for further details and restrictions.

Contact: International Comfort Products, 317-240-5133; www.goairquest.com.

Serviceability features: Large control box provides room to work and easily mount accessories. An intuitive switch and rotary dial arrangement make configuration of the fan settings simple. New unit control board puts all connections and troubleshooting points in one convenient location. Most low-voltage connections can be made to the same easy-access board. Field-convertible to horizontal airflow for installation flexibility.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Units are built on a rigid base pan with base-rail design to

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multi-speed motor operation.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: With 75% fewer moving parts than traditional belt drive systems, X-Vane fan technology indoor fan system uses less energy. A reference DC volt chart and intuitive switch/rotary dial make fan adjustments simple. The new 5/16-inch round copper tube and aluminum plate condenser coils improve efficiency and reduce refrigerant charge. Units are ideal for replacement because they have the same footprint as 30 years ago. No special training required.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goairquest.com.

Three-phase packaged system, QGA gas/electric, QCA electric/electric, and QHA heat pump

Serviceability features: Brass service valves on the liquid and discharge lines. Easily accessible components.

Noise-reduction features: Low gas pulses during compression reduces operational sound levels. Muffler in discharge line reduces operating sound levels. Conditioned areas insulated with foil-faced insulation to minimize heat loss and reduce operating sound levels

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The new line accommodates both horizontal and downflow applications with plug-and-play designs that install quickly and easily even when replacing different brands. With efficiency ratings of 14 SEER and 11.5 EER, the entire Q-Series product line is designed with side and bottom connections, quick-connect electric connections, and a factory-installed float switch to facilitate smooth installations without the need for special brackets.

Warranty information: Ten-year limited warranty for the aluminum gas heat exchanger; five-year limited warranty for the compressor; and one-year limited warranty on additional covered components.

Special installation requirements: Manufacturer did not specify.

Contact: Allied Commercial, 800-448-5872; www.allied-commercial.com.

Serviceability features: All connections and troubleshooting points are in one convenient place: the master terminal board. Units have provisions for through-the-bottom power entry. IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic, and energy-saving indoor fan motor delay. Access panels have easy-grip handles and no-strip screws.

Noise-reduction features: Quiet and efficient operation is provided by belt-driven evaporator fan and a fully insulated cabinet.

IAQ equipment supported: Two-inch return air filters. Optional economizer control accepts CO2 sensor for IAQ capability. Duct-mounted CO2 sensor accessory available for field installation to provide outdoor air for ventilation capability on demand (DCV).

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Field-convertible 15-ton unit. Dedicated vertical or horizontal airflow duct configuration models (17.5 tons and above). This ASHRAE 90.1-compliant unit features high- and low-pressure switches. Scroll compressor has internal line-break overload protection. Factory-installed options include three heat options (high, medium, low), stainless steel heat exchangers, and high static indoor fan option.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended warranty available.

Special installation requirements: For units equipped with VFDs: motors on VFDs always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goarcoaire.com.

Serviceability features: Large access panels feature easy-grip handles and no-strip screw technology. Air filters are accessed through a toolless filter access door. New unit control board layout connections make troubleshooting easy. Simple fan adjustments can be made to the ECM by setting the DC voltage through an intuitive switch/rotary dial. Units also have a corrosion-resistant, internally sloped, self-draining condensate pan.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Units are built on a rigid base pan with base-rail design to maintain original design.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multi-speed motor operation. Units available in a variety of gas heat sizes to match specific climate zones and applications.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: X-Vane fan technology indoor fan system has 75% fewer moving parts than traditional belt drive systems and uses less energy. The new 5/16-inch round copper tube and aluminum plate condenser coils help improve efficiency and reduce refrigerant charge. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. Units have same footprint as 30 years ago, making them ideal for replacement. No special training required.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goarcoaire.com.

Serviceability features: All installation and service work can be performed from inside the building to facilitate multi-story installations. The hinged removeable front panels allow easy access to air filters and all electrical controls. Heavy-duty permanent rollers facilitate installation and removal. Duct-free discharge plenum or hot water plenum box available. Unit can also be ducted.

Noise-reduction features: The Q-TEC’s quiet technology provides extremely low indoor sound levels by using patent-pending components and materials in the construction of the units. This allows the unit to be installed inside the classroom, eliminating the need for outdoor condensing units or roof-mounted equipment. Natural fiber insulation eliminates all fiberglass from airstream. Also, compressor sound cover and double isolation grommets help to reduce sound levels.

IAQ equipment supported: Ventilation packages available include commercial room ventilators and energy recovery ventilators. All current products have ECM motors that accommodate MERV 13 filters. Units also available with UV-C LED light for air sterilization.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The Q-Tec air-to-air heat pump is part of Bard’s extensive line of classroom climate control equipment. Designed to provide year-round comfort, the QH unit provides heating, cooling, dehumidification, and ventilation. Step-capacity two-stage scroll compressor and variable-speed ECM blower motor combine to deliver outstanding energy efficiencies. Balanced climate technology: high latent capacity humidity and sound reduction remove up to 35% more humidity. Models available with hot gas reheat dehumidification for energy-efficient humidity removal.

Warranty information: Five-year parts and five-year compressor warranty.

Contact: Bard Mfg. Co., 419-636-1194; www.bardhvac.com.

Serviceability features: All installation and service work can be performed from inside the building to facilitate multi-story installations. The hinged removeable front panel allows easy access to air filters and all electrical controls. Heavy-duty permanent rollers facilitate installation and removal. Duct-free discharge plenum or hot water plenum box available. Unit can also be ducted.

Noise-reduction features: The Q-TEC’s quiet technology provides extremely low indoor sound levels by using patent-pending components and materials in the construction of the units. This allows the unit to be installed inside the classroom, eliminating the need for outdoor condensing units or roof-mounted equipment. Natural fiber insulation eliminates all fiberglass from airstream. Also, compressor sound cover and double isolation grommets help to reduce sound levels.

IAQ equipment supported: Ventilation packages available include commercial room ventilators and energy recovery ventilators. All current products have ECM motors that accommodate MERV 13 filters. Units also available with UV-C LED light for air sterilization.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The Q-Tec water-to-air heat pump is part of Bard’s extensive line of classroom climate control equipment. Designed to provide year-round comfort, the QWS provides heating, cooling, dehumidification, and ventilation while utilizing nature’s most efficient solar energy collector: ground water. A versatile design allows QWS units to be connected to a boiler/tower, well field, or individual ground loop. Step-capacity two-stage compressor, variable-speed ECM blower motor, and cupro-nickel water coil combine to deliver outstanding efficiencies.

Warranty information: Five-year parts and five-year compressor warranty.

Contact: Bard Mfg. Co., 419-636-1194; www.bardhvac.com.

Serviceability features: Each SSB industrial boiler has easily accessible components with removable panels on all four sides of the boiler, as well as two fully independent heat exchangers that can be operated individually if necessary. A 7-inch external touchscreen display allows for intuitive system control and monitoring, while an internal HMI screen allows for advanced boiler adjustments. It is also field-convertible to either natural gas or liquid propane.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: SSB800-SSB1000TL boilers incorporate two heat exchangers, creating inherent redundancy in a single boiler design, potentially reducing total plant load requirements versus other single-heat-exchanger boilers. Additionally, 2-4 SSB1000TL units can be connected together with single-point connections for system piping, venting, combustion air, and gas connection. This modular approach internalizes much of the installation piping that is external with other boilers. All models are available with a multifunction LLH assembly to further simplify system piping.

Warranty information: Ten-year limited warranty for heat exchanger, as well as two-year parts warranty.

Special installation requirements: With a small footprint (31.5 by 36 inches) and minimal clearance requirements and output ranges from 800 to 8,192 MBH, these boilers can be utilized in almost any application and have connection points on either the left or right side. In addition, the SSB1000TL boilers have an innovative design that allows up to four of these boilers to be cascaded on either side without any additional purchased venting parts or accessories.

Contact: Bosch Thermotechnology, 815-321-9379; www.bosch-thermotechnology.us.

Serviceability features: Horizontal cabinets come standard with blower systems that are easily reconfigured on the job site. The blower discharge arrangement can be changed from end to straight through discharge in only a matter of minutes.

Noise-reduction features: Comes standard with a unique sound package designed to eliminate vibration transmission to the cabinet and reduce unwanted noise in the occupied space. The product is designed with blower wheels that help keep discharge air noise to a minimum. Another optional noise-reducing feature is fiberglass insulation, or closed-cell foam insulation with a compressor sound blanket.

IAQ equipment supported: All LV models have the option to be equipped with a MERV 8 filter rack, while some have the ability to go up to a MERV 13 directly from the factory.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: This option-rich, single-stage heat pump is available in ½- to 6-ton size range and meets or exceeds ASHRAE 90.1 efficiency standards. It is outfitted with the latest in compressor, blower motor, and heat transfer technologies and performs extremely well in both water loop and geothermal applications. This highly efficient unit reduces operating cost and assists in reducing carbon dioxide emissions, which are a leading cause of global warming.

Warranty information: The warranty provides protection for the compressor for the shorter of five years from proof of certificate of occupancy date, five years from proof of certified startup date, or six years from date of manufacture. For other parts, there is one-year protection following installation of the product or 18 months following manufacture.

Special installation requirements: The compact cabinet is designed to fit most commercial replacement projects.

Contact: Bosch Thermotechnology, 815-321-9379; www.bosch-thermotechnology.us/us/en.

With Axion™ fan technology, 547K

Serviceability features: New unit control board layout is designed for easy troubleshooting in one area, plus simple fan adjustment is made to the ECM by setting DC voltage through an intuitive switch and rotary dial. Units also have corrosion-resistant, internally sloped, self-draining condensate pan. Large access panels with easy grip handles and no-strip screw technology, while air filters are accessed through a toolless filter access door.

Noise-reduction features: Units are built on a rigid base pan and base rail design to ensure original design is maintained. Insulated cabinet, isolated scroll compressor mounting, and balanced indoor and outdoor fan systems. Indoor fan uses Axion fan technology/Vane Axial fan design with built-in, ramp-up speed technology to soften the sound experienced by other traditional systems during startup.

IAQ equipment supported: Factory-furnished air filters with factory upgrade to higher MERV rating. Factory and field fresh air energy saving economizers are available. Economizers use fault detection diagnostic (FDD) controls to ensure operation and control ventilation air at multi-speed motor operation. Unit also available with multiple choices of backup heat sizes to match particular climate zones and applications.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The Axion™ fan technology indoor fan system has 75% fewer moving parts than traditional belt drive systems plus uses less energy. The new 5/16-inch copper round tube and aluminum plate condenser coils help improve efficiency, reduce refrigerant charge, and increase heating output. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. No special training is required. Units have same footprint as 31 years ago making ideal for replacement.

Warranty information: Standard limited parts warranty: five-year parts on compressor and electric heaters, five-year factory-installed ultra-low leak economizers with FDD, and one-year parts. Other extended warranty packages are also available.

Special installation requirements: None, units are a single packaged design with many pre-engineered and certified factory options and field accessories to most geographic areas and applications.

Contact: Bryant Heating & Cooling Systems, 800-428-4326; www.bryant.com.

Serviceability features: Comes standard with on-board controls that provide diagnostics and troubleshooting capabilities. It also includes system LED indicator, fault LED indicator, compressor fault LED, as well as phase loss protection and phase reversal protection. Internal components are accessible through large access panel, and refrigerant readings and hookups are through factory-installed, easy access, service valves.

Noise-reduction features: High-efficiency scroll compressors include vibration isolation and overload protection for a quiet and durable operation. Condenser fan uses precision multi-blade fan that is balanced and sized for maximum performance and low sound levels.

IAQ equipment supported: When paired with Bryant 524J air handler, direct expansion cooling coils prevent the buildup of humidity. The air handler has integrated economizer operation with multiple sensing options, 2-inch disposable filters, and multiple speed indoor fan motors.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Units come standard with dependable time/temperature defrost controls and refrigerant suction line accumulator. Complete offering of sizes, operation, and options makes the 575J heat pump models ideal for replacement or new construction.

Warranty information: Five-year parts-only on compressors and one-year parts-only on all other. Optional extended protection programs are available.

Special installation requirements: None, simple proven design with provided refrigerant filter drier and accessible service valves.

Contact: Bryant Heating & Cooling Systems, 800-428-4326; www.bryant.com.

Serviceability features: Comes standard with on-board controls that provide diagnostics and troubleshooting capabilities. It also includes system LED indicator, fault LED indicator, compressor fault LED, as well as phase loss protection and phase reversal protection. Internal components are accessible through large access panel and refrigerant readings, and hook-ups are through factory-installed easy access service valves.

Noise-reduction features: High-efficiency scroll compressors include vibration isolation and overload protection for a quiet and durable operation. Condenser fan uses precision multi-blade fan that is balanced and sized for maximum performance and low sound levels.

IAQ equipment supported: When paired with Carrier 40RUQ air handler, direct expansion cooling coils prevent the buildup of humidity. The air handler has integrated economizer operation with multiple sensing options, 2-inch disposable filters, and multiple speed indoor fan motors.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Units come standard with dependable time/temperature defrost controls and refrigerant suction line accumulator. Complete offering of sizes, operation, and options makes the 38AUQ heat pump models ideal for replacement or new construction.

Warranty information: Five-year parts-only on compressors and one-year parts-only on all other. Optional extended protection programs are available.

Special installation requirements: None, simple proven design with provided refrigerant filter drier and accessible service valves.

Contact: Carrier, 800-Carrier (800-227-7437); www.carrier.com/commercial.

Serviceability features: Large access panels with easy-grip handles and no-strip screw technology, while air filters are accessed through a toolless filter access door. New unit control board layout is designed for easy troubleshooting in one area, plus simple fan adjustment is made to the ECM by setting DC voltage through an intuitive switch and rotary dial. Units also have corrosion-resistant, internally sloped, self-draining condensate pan. The use of SystemVu controls increases service and diagnostic capabilities.

Noise-reduction features: Insulated cabinet, isolated scroll compressor mounting, and balanced indoor and outdoor fan systems. Indoor fan uses Ecoblue technology/Vane Axial fan design with built-in, ramp-up speed technology to soften the sound experienced by other traditional systems during startup. Units are built on a rigid base pan and base rail design to ensure original design is maintained.

IAQ equipment supported: Factory-furnished air filters with factory upgrade to higher MERV rating. Units are available with an optional foil-face insulation that is taped and encapsulated in the panel design. Factory and field fresh air energy saving economizers are available. Economizers use fault detection diagnostic (FDD) controls to ensure operation and control ventilation air at multi-speed motor operation. Unit also available with multiple choices of backup heat sizes to match particular climate zones and applications.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Multi-stage operation with Ecoblue technology indoor fan system has 75% fewer moving parts than traditional belt drive systems and uses less energy. The new 5/16-inch copper round tube and aluminum plate condenser coils improve efficiency, reduce refrigerant charge, and increase heating output. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. No special training is required. Units have same footprint as 31 years ago making ideal for replacement.

Warranty information: Standard limited parts warranty: five-year parts on compressor and electric heaters; five-year factory-installed, ultra-low leak economizers with FDD, three-year SystemVu controls, and one-year parts. Other extended warranty packages are also available.

Special installation requirements: None, units are a single packaged design with many pre-engineered and certified factory options and field accessories to most geographic areas and applications

Contact: Carrier, 800-Carrier (800-227-7437); www.carrier.com/commercial.

Serviceability features: IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic, and energy-saving indoor fan motor delay. All connections and troubleshooting points are in one convenient place: the easy-access master terminal board. Units feature through-the-base utility connections capability. Access panels have easy-grip handles and no-strip screws.

Noise-reduction features: Quiet and efficient operation is provided by belt-driven evaporator fans and a fully insulated cabinet.

IAQ equipment supported: Optional economizer control accepts CO2 sensor for IAQ capability. Duct-mounted CO2 sensor accessory available for field installation to provide demand-controlled ventilation capability (DCV).

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: These ASHRAE 90.1-compliant, energy-efficient units feature field-convertible airflow and high- and low-pressure switches. Dual scroll compressors. Scroll compressors have internal line-break overload protection. Factory-installed options include three heat options (high, medium, low), and medium- and high-static indoor fan option. Other market-driven factory options such as smoke detectors and disconnect switches are available.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized stainless steel heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: For units equipped with VFDs: motors on VFDs always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.gocomfortmaker.com.

Serviceability features: New unit control board puts all connections and troubleshooting points in one convenient location. Most low voltage connections can be made to the same easy-access board. Large control box provides room to work and easily mount accessories. An intuitive switch and rotary dial arrangement make configuration of the fan settings simple. Field-convertible to horizontal airflow for installation flexibility.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Lightweight, high-impact composite fan blade on the outdoor fan system minimizes sound.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic (FDD) controls to ensure operation and control ventilation air at multi-speed motor operation.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: X-Vane fan technology indoor fan system uses less energy and has 75% fewer moving parts than traditional belt drive systems. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. New 5/16-inch round copper tube and aluminum plate condenser coils help improve efficiency and reduce refrigerant charge. Units have the same footprint as 30 years ago, making them ideal for replacement. No special training required.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.gocomfortmaker.com.

Serviceability features: This WSHP leads the way in small-scale serviceable design that provides contractors and facility managers with a low-cost alternative to more expensive and larger WSHPs. Design features include LED sightglass, allowing an instant visual of unit operations for quick troubleshooting and toolless filter change. Additionally, the WSHP is equipped with service values for measuring unit pressures and built-in diagnostics with LED annunciation.

Noise-reduction features: The acoustic signature of each design detail of the WSHP is evaluated in a reverberant lab to identify where sound reduction is needed most. That led Daikin to develop a unique dual-level vibration isolation system, which minimizes sound transmitted into the airstream. The WSHP also includes a field-adjustable, four-position fan speed selector to help optimize fan speed and related sound. Plus, sound-reduction insulation and compressor sound blankets are available.

IAQ equipment supported: The WSHP is equipped with closed-cell, non-fibrous insulation that is cleanable and prevents fibers from entering the airstream, improving the IAQ of the building. An optional 2-inch-deep filter rack is available as a factory-installed option and accepts a MERV 8 filter — or a 4-inch-deep filter rack accepts a MERV 13 filter. Both options include low-leakage filter racks to eliminate the bypass of air around the filter.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The SmartSource compact WSHP is a high-efficiency, cost-effective unit that delivers an ideal combination of performance and features. Core features and add-ons include: waterside economizers; hot gas reheat; hydronic and geothermal heat; cupro-nickel heat exchanger; Lon and BACnet compatibility; high filtration; sound reduction; electric heat control; corrosion protection; disconnect switch; and constant-torque and constant-cfm ECM motors with smart airflow control, which reduces airflow as the room temperature approaches set point conditions.

Warranty information: Standard one-year warranty for parts and labor. Customers can also purchase an additional one- or four-year parts warranty.

Special installation requirements: Designed with the contractor in mind so installation is seamless and intuitive, which helps minimize time and cost. The WSHP includes flush-mount water connections, for example. Technicians only need one wrench to hook the unit up — no additional tools required. Plus, commissioning can be done at the factory so the WSHP is ready to connect to control and monitoring systems as soon as it arrives onsite.

Contact: Daikin Applied, 612-202-8774; www.daikinapplied.com.

Standard efficiency gas/electric and heat pump rooftops

Serviceability features: Easy access to fan, motor, control panel, gas valves, and compressor with optional toolless hinged access doors. Standard features include slide-out blower for easy access and removal; sloped drain pan; contactors with lugs; high- and low-pressure switches; high capacity steel-cased filter driers; crankcase heater; built-in filter rack for 2-inch filters convertible to 4 inches; labeled field connections; and color-coded and continuously marked wires for easy point-to-point component connections.

Noise-reduction features: High-efficiency scroll compressors

IAQ equipment supported: Factory-installed economizers are available for providing and controlling fresh outside air.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Daikin’s line of standard efficiency RTUs brings ease of installation and efficient operation with an outstanding limited warranty. Features include 5-mm condensing coils and Daikin’s most durable tubular heat exchanger. Several factory-installed options include hinged access panels, powered or non-powered convenience outlets, non-fused disconnect switch, return and/or supply air smoke detectors, stainless-steel heat exchanger, economizer, and phase monitor. New Daikin LCXpress selection tool specifically for rooftop application configuration.

Warranty information: The heat exchanger is covered by a 20-year warranty and all functional parts are covered by a five-year parts warranty. Complete warranty details are available from local dealer, distributor, or manufacturer representative. To receive the parts limited warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec.

Special installation requirements: Engineered to be an easy direct replacement for most rooftop units without the need for a curb adapter. All sizes include built-in through-the-base options and horizontal access knockouts for easy infield wiring and piping installation. Supply fan comes standard for downflow applications and field convertible for horizontal applications.

Contact: Daikin North America LLC, 713-861-2500; www.northamerica-daikin.com.

High-efficiency, gas/electric and heat pump rooftops

Serviceability features: Easy access to fan, motor, control panel, gas valves, and compressor with optional toolless, hinged access doors. Standard features include slide-out blower for easy access and removal; sloped drain pan; contactors with lugs; high- and low-pressure switches; high capacity steel-cased filter driers; crankcase heater; built-in filter rack for 2-inch filters convertible to 4 inches; labeled field connections; and color-coded and continuously marked wires for easy point-to point component connections.

Noise-reduction features: High-efficiency scroll compressors.

IAQ equipment supported: Factory-installed economizers are available for providing and controlling fresh outside air.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Daikin’s line of standard efficiency RTUs brings ease of installation and efficient operation with an outstanding limited warranty. Features include 5-mm condensing coils and Daikin’s most durable tubular heat exchanger. Several factory-installed options include hinged access panels, powered or non-powered convenience outlets, non-fused disconnect switch, return and/or supply air smoke detectors, stainless-steel heat exchanger, economizer, and phase monitor. New Daikin LCXpress selection tool specifically for rooftop application configuration.

Warranty information: The heat exchanger is covered by a 20-year warranty and all functional parts are covered by a five-year parts warranty. Complete warranty details are available from local dealer, distributor, or manufacturer representative. To receive the parts limited warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec.

Special installation requirements: Engineered to be an easy direct replacement for most rooftop units without the need for a curb adapter. All sizes include built-in through-the-base options and horizontal access knockouts for easy in-field wiring and piping installation. Supply fan comes standard for downflow applications and field convertible for horizontal applications.

Contact: Daikin North America LLC, 713-861-2500; www.northamerica-daikin.com.

Serviceability features: The AURORA uses hot gas base pan circuit to allow installation without the need of additional drain pan heaters. Auto changeover to back-up (auxiliary) heat as standard. Long pipe lengths with up to 295 feet allowable height difference between outdoor and indoor units. Continuous heating during defrost and oil return on multi-module systems. Daikin PE Blue fin coil with 1,000 hours’ salt spray test. Ships factory standard with coil guards.

Noise-reduction features: Standard operating sound levels are minimized with Daikin’s inverter, variable-speed, vapor-injection compressors.

IAQ equipment supported: Compatible with Daikin DVS dedicated outside air system (DVS - DOAS AHU). Designed for seamless integration with VRV air-cooled heat recovery outdoor units and controls to provide conditioning of 100% outside ventilation air. Also compatible with 100% outside air processing unit (FXMQ_MFVJU) and energy recovery ventilator (VAM_GVJU), providing sufficient levels of fresh outside air and recover waste heat from extracted air leaving the conditioned zone.

Thermostat compatibility: Requires a special thermostat.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The air-cooled AURORA is manufactured in the USA and delivers heating down to -22°F (-30°C) as standard. Offers 100% heating capacity at 0°F (-18°C), up to 85% capacity at -13°F (-25°C), and up to 60% capacity at -22°F (-30°C). Patented vapor-injection inverter compressor technology for optimized part-load efficiency. Year-round comfort and efficiency with automatic and customizable variable refrigerant technology (VRT).

Warranty information: Ten-year parts limited warranty and 10-year replacement compressor limited warranty. Complete warranty details are available from local dealer, distributor, or manufacturer representative. To receive the parts limited warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec.

Special installation requirements: Manufacturer did not specify.

Contact: Daikin North America LLC, 713-861-2500; www.northamerica-daikin.com.

Serviceability features: Completely redesigned for ease of service. Sealed electrical box with IP55 rating for protection from dust, water, and snow. Hot gas defrost circuit at bottom of coil eliminates need for base pan heater. Service window provides quick access to multifunctional display and configuration buttons. Multifunctional display provides refrigerant pressures and temperatures, eliminating the need to connect gauges during regular maintenance check. Refrigerant-cooled circuit keeps PCB cool. Intermittent outdoor fan operation minimizes snow accumulation.

Standard operating sound levels are minimized with Daikin’s inverter, variable-speed, vapor-injection compressors.

IAQ equipment supported: Compatible with 100% outside air processing unit (FXMQ_MFVJU) and energy recovery ventilator (VAM_GVJU) providing sufficient levels of fresh outside air and recover waste heat from extracted air leaving the conditioned zone.

Thermostat compatibility: Requires a special thermostat.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: New, stylish, space-saving design engineered to provide ease of installation and service. Available in a single- and dual-module lineup with a new larger chassis and modular connectivity providing up to 40-ton system capacity with only two modules. Longer piping lengths allow coverage up to 360 feet of vertical distance. Patented vapor-injection inverter compressor technology for optimized part-load efficiency. Year-round comfort and efficiency with automatic and customizable variable refrigerant technology (VRT).

Warranty information: Ten-year parts limited warranty and 10-year replacement compressor limited warranty. Complete warranty details are available from local dealer, distributor, or manufacturer representative. To receive the parts limited warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec.

Special installation requirements: Manufacturer did not specify.

Contact: Daikin North America LLC, 713-861-2500; www.northamerica-daikin.com.

Serviceability features: Available in 3-, 4- and 5-ton sizes for application flexibility. 230-volt operation. Easy access to service valves. Only two screws to access control panel. External high and low refrigerant service ports.

Noise-reduction features: Quiet operation (as low as 69 dBA). Units are equipped with Copeland Scroll compressors and isolation compressor grommets to minimize sound. Compressor sound blanket standard.

IAQ equipment supported: Compatible with most industry IAQ offerings.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Energy Star qualified. Up to 16 SEER and 9 HSPF efficiency ratings. Scroll compressor provides reliable single-stage, three-phase cooling for improved temperature and humidity control. Galvanized steel construction protects unit against extreme weather.

Warranty information: For commercial applications, five-year limited warranty on compressor; one-year limited warranty on all other parts. Please see warranty certificate for further details and restrictions.

Contact: International Comfort Products, 317-240-5133; www.godayandnight.com.

Serviceability features: Large control box provides room to work and easily mount accessories. An intuitive switch and rotary dial arrangement make configuration of the fan settings simple. New unit control board puts all connections and troubleshooting points in one convenient location. Most low-voltage connections can be made to the same easy-access board. Field-convertible to horizontal airflow for installation flexibility.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Units are built on a rigid base pan with base-rail design to maintain original design.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multi-speed motor operation.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: With 75% fewer moving parts than traditional belt drive systems, X-Vane fan technology indoor fan system uses less energy. A reference DC volt chart and intuitive switch/rotary dial make fan adjustments simple. The new 5/16-inch round copper tube and aluminum plate condenser coils help improve efficiency and reduce refrigerant charge. Units are ideal for replacement, because they have the same footprint as 30 years ago. No special training required.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.godayandnight.com.

Serviceability features: Designed with easily removable panels for service and maintenance.

Noise-reduction features: Systems feature low indoor and outdoor unit operating sound levels. Indoor units can be as low as 21 dB (similar to a soft whisper) and outdoor units can be as low as 50 dB.

IAQ equipment supported: Several of the 11 different indoor unit types have options for integration of filtered outside air. In addition, the J-IV system can be configured with dedicated outside air units with air filters as well.

Thermostat compatibility: Compatible with most thermostats., Requires a special thermostat.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Expanded heating operation range, more than 50% of rated capacity down to -15°F. Allows up to 150% indoor unit connectable capacity ratio. Connect up to 9, 12, and 15 indoor units to each 3-, 4-, and 5-ton outdoor unit, respectively. Choose from 11 indoor unit styles ranging from 4,000 to 60,000 Btuh. Ability to reduce electrical circuit breaker sizes when installed. Built-in base pan heaters designed for reliable drain management.

Warranty information: Standard limited warranty of five-year parts and seven-year compressor. When registered system is installed by licensed contractor according to law, codes, good trade practices, and product documentation, it is extended to 10/10.

Special installation requirements: Installation of the J-IV system is described in the installation manual.

Contact: Fujitsu General America Inc., 888-888-3424; www.fujitsugeneral.com.

Serviceability features: Units have provisions for through-the-bottom power and gas entry. Advanced terminal board for simple safety circuit troubleshooting and control box arrangement. Access panels have easy-grip handles and no-strip screws. Toolless filter access door. IGC solid state control for on-board diagnostics with LED error code designation and burner control logic.

Noise-reduction features: Quiet and efficient operation is provided by belt-driven evaporator fan and a fully insulated cabinet.

IAQ equipment supported: Optional economizer control accepts CO2 sensor for IAQ capability. Duct-mounted CO2 sensor accessory available for field installation to provide outdoor air for ventilation capability on demand (DCV).

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: This ASHRAE 90.1-compliant unit features efficient scroll compressors with internal line-break overload protection. Field convertible from vertical to horizontal airflow on certain models. Exclusive non-corrosive composite condensate pan in accordance with ASHRAE 62. Low-pressure freeze protection and high-pressure switches. Fixed refrigerant metering system.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended warranty available.

Special installation requirements: For units equipped with VFDs: motors on VFDs always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goheil.com.

Serviceability features: New unit control board puts all connections and troubleshooting points in one convenient location. Most low voltage connections can be made to the same easy-access board. Large control box provides room to work and easily mount accessories. An intuitive switch and rotary dial arrangement make configuration of the fan settings simple. Field-convertible to horizontal airflow for installation flexibility.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Lightweight, high-impact composite fan blade on the outdoor fan system minimizes sound.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multi-speed motor operation.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: X-Vane fan technology indoor fan system uses less energy and has 75% fewer moving parts than traditional belt drive systems. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. New 5/16-inch round copper tube and aluminum plate condenser coils help improve efficiency and reduce refrigerant charge. Units have the same footprint as 30 years ago, making them ideal for replacement. No special training required.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goheil.com.

Serviceability features: Large access panels feature easy-grip handles and no-strip screw technology. Air filters are accessed through a toolless filter access door. New unit control board layout connections make troubleshooting easy. Simple fan adjustments can be made to the ECM by setting the DC voltage through an intuitive switch/rotary dial. Units also have a corrosion-resistant, internally sloped, self-draining condensate pan.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Units are built on a rigid base pan with base-rail design to maintain original design.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multispeed motor operation. Units available in a variety of gas heat sizes to match specific climate zones and applications.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: X-Vane fan technology indoor fan system has 75% fewer moving parts than traditional belt drive systems and uses less energy. The new 5/16-inch round copper tube and aluminum plate condenser coils help improve efficiency and reduce refrigerant charge. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. Units have same footprint as 30 years ago, making them ideal for replacement. No special training required.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goicpcommercial.com.

Serviceability features: Units feature through-the-base utility connections capability. All connections and troubleshooting points located in one convenient place: the master terminal board. Access panels have easy-grip handles and no-strip screw feature. Large, laminated, control/power wiring drawings affixed to unit make troubleshooting easier.

Noise-reduction features: Quiet and efficient operation is provided by belt-driven evaporator fans and a fully insulated cabinet.

IAQ equipment supported: Optional economizer control accepts CO2 sensor for IAQ capability. Duct-mounted CO2 sensor accessory available for field installation to provide demand-controlled ventilation capability (DCV).

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: These ASHRAE 90.1-compliant, energy-efficient units are field convertible for vertical or horizontal airflow duct configuration. High- and low-pressure switches. Scroll compressor has internal line-break overload protection. Factory-installed options include high-static indoor fan and economizers.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: For units equipped with VFDs: motors on VFDs always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.goicpcommercial.com.

Serviceability features: These rooftop units are engineered for simplified serviceability to lower the life-cycle costs of the unit. The new RTUToolkit app for Android and iOS allows contractors to simply scan a unique QR code on each rooftop, which enables on-demand access to unit-specific details, technical literature, and direct connection to technical support. Optional features include a mobile access portal gateway that offers a Wi-Fi interface, allowing for technicians to interface with the units from their cars.

Noise-reduction features: Sound attenuator and compressor sound blanket options minimize sound outputs.

IAQ equipment supported: Indoor air quality is maximized through optional features such as ultraviolet lights, humidifiers, and final filters.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Does not share replacement parts with other models.

Additional features: The expanded Premier platform is designed for faster installation and simplified startup, while significantly reducing operational costs over the life of the unit. Premier commercial rooftop units offer best-in-class standard efficiency levels and meet aggressive Department of Energy 2023 energy-efficiency requirements. Premier rooftop units come standard with next-generation Smart Equipment and can connect seamlessly to a controls system. On-board controls support cloud-based data analytics, including fault detection.

Warranty information: Standard one-year parts and either a six-month or one-year promotional labor warranty when started by a certified contractor.

Special installation requirements: Dedicated factory support and contractor training help ensure proper installation, commissioning, and startup. Units arrive ready to go — with optional components, such as smoke detectors, installed at the factory to simplify code compliance and streamline the process. To reduce the cost of crane required to set the unit, 60- to 80-ton cabinets can be supplied as a split ship unit. Split ship units are intended to be put back together in the field.

Contact: Johnson Controls, 833-242-7869; www.johnsoncontrols.com/hvac-equipment/rooftop-units/premier.

Serviceability features: Units feature through-the-base utility connections capability. All connections and troubleshooting points located in one convenient place: the master terminal board. Access panels have easy grip handles and no-strip screw feature. Large, laminated control/power wiring drawings affixed to unit make troubleshooting easier.

Noise-reduction features: Quiet and efficient operation is provided by belt-driven evaporator fans and a fully insulated cabinet.

IAQ equipment supported: Optional economizer control accepts CO2 sensor for IAQ capability. Duct-mounted CO2 sensor accessory available for field installation to provide demand-controlled ventilation capability (DCV).

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: These ASHRAE 90.1-compliant, energy-efficient units are field convertible for vertical or horizontal airflow duct configuration. High- and low-pressure switches. Scroll compressor has internal line-break overload protection. Factory-installed options include high-static indoor fan and economizers.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: For units equipped with VFDs: motors on VFDs always spin in the correct direction. Installers should perform a proper startup, which includes checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.gokeeprite.com.

Serviceability features: New unit control board puts all connections and troubleshooting points in one convenient location. Most low voltage connections can be made to the same easy-access board. Large control box provides room to work and easily mount accessories. An intuitive switch and rotary dial arrangement make configuration of the fan settings simple. Field-convertible to horizontal airflow for installation flexibility.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Lightweight, high-impact composite fan blade on the outdoor fan system minimizes sound.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multispeed motor operation.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: X-Vane fan technology indoor fan system uses less energy and has 75% fewer moving parts than traditional belt drive systems. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. New 5/16-inch round copper tube and aluminum plate condenser coils help improve efficiency and reduce refrigerant charge. Units have the same footprint as 30 years ago, making them ideal for replacement. No special training required.

Warranty information: Five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

317-240-5133; www.gokeeprite.com.

Serviceability features: Manufacturer did not specify.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Self-contained internal thermostat with self-diagnostics.

Replacement parts compatibility: Manufacturer did not specify.

Additional features: The 6HK13 is the smallest self-contained, air cooled heat pump offered by Koldwave. It operates on 115-1-60 volt and less than 10 amps. This unit provides year-round portable comfort with both heating and cooling modes of operation. Multi-directional nozzles, cleanable evaporator and condenser filters, and lockable casters are all standard features on this model.

Warranty information: Standard three-year compressor and two-year parts.

Special installation requirements: Manufacturer did not specify.

Contact: Koldwave, 413-564-5779; www.koldwave.com.

Serviceability features: Large removable front doors open to an intelligently laid out control panel with limits, alarms, gateways, and terminal blocks all accessible from the front. The gas train and blower are cantilevered off the front of the heat exchanger for easy access to adjust settings or make any needed field replacement of parts.

Electronic air-to-fuel ratio control of the combustion system coupled with a low-noise blower results in very quiet operation.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The boiler includes real-time TruTrac® O2 trim compensation that maintains ideal air-to-fuel ratios, up to 20:1 turndown to match varying load profiles, and the powerful Laars Linc icon-driven control system. Each MagnaTherm FT is built with CF-Tech™ contoured flue tubes that evenly distribute heat to maximize heat transfer, increasing efficiency and extending heat exchanger life. The vertically designed MagnaTherm FT has a small footprint to fit into tight mechanical rooms.

Warranty information: Ten-year heat exchanger, one-year parts.

Special installation requirements: The small footprint takes up less floor space and fits through doors and into tight mechanical rooms. All gas, water, and high-voltage connections are located in the back of the MagnaTherm FT for ease of installation. Many electrical packages are also available to meet job site voltage requirements; 120, 240, 480 or 600 vac, depending on boiler size.

Contact: Laars Heating Systems, 603-335-6300; www.laars.com.

Serviceability features: Units have hinged access panels for easy access to the DSI control board and wiring connections. Removable terminal blocks allow the installers to make the wiring connections in a comfortable position and then install the wired plug onto the board when it is complete. The DSI control board has 11 diagnostic codes for easy troubleshooting and service.

Noise-reduction features: Using a dimpled tubular heat exchanger design and efficient direct-drive fan motors, the LF25s efficiently deliver the heat needed at lower sound levels to provide a quiet, comfortable space.

IAQ equipment supported: Does not apply.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: With 14 available heating capacities, it’s easy to find the right size heater to keep spaces comfortable. Horizontal and vertical wall venting options, as well as the 180-degree installation capability, allow the units to be placed in a number of locations. Hinged access door allows easy access to the DSI control board and allow quick and easy access to service the unit.

Warranty information: Ten-year aluminized heat exchanger, 15-year stainless steel heat exchanger. The covered components in the equipment are warrantied by the manufacturer for a period of one year when installed in either a residential or non-residential application.

Special installation requirements: With 180-degree installation capability (030-105 kBtuh models), technicians can install the unit heater “upside down,” which greatly increases installation flexibility and can prevent having to pipe everything to the other side of the unit. This will save time and money. Removable terminal blocks for both line voltage and thermostat wires allow the technicians to remove the plugs from the board.

Contact: Lennox Commercial, 800-453-6669; www.lennoxcommercial.com.

Serviceability features: LG offers technical support over the phone at 888-346-1923, Monday to Friday, from 8 a.m. to 6 p.m. Central time.

Noise-reduction features: Low sound ECM fan motor and internally insulated cabinet help with noise-reduction.

IAQ equipment supported: Two-inch-thick MERV 8 filters provided.

Thermostat compatibility: Factory-installed microprocessor controller and discharge air temperature sensor allow for stand-alone control or remote control by LG AC Smart touch screen controller.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Adjustable airflow range from 1,000 to 2,000 cfm. Fan cfm control provides constant volume airflow rate even when external static pressure changes as the filters get dirty. Factory-installed heat recovery box reduces installation labor. Fully modulating hot gas reheat coil; microprocessor control with built-in graphics and IP addressable; and bottom service access for filters.

Warranty information: Standard limited one-year parts warranty. For complete warranty details visit, lg-dfs.com/warranty.aspx.

Special installation requirements: Manufacturer did not specify.

Contact: LG Electronics U.S.A. Inc., 917-664-1758; www.lghvac.com.

Serviceability features: LG offers technical support over the phone at 888-346-1923, Monday to Friday from 8 a.m. to 6 p.m. Central time.

Noise-reduction features: Double-wall foam-injected cabinet construction. Supply and exhaust fans use ECM motors.

IAQ equipment supported: Two-inch MERV 8 filters at energy recovery wheel outdoor air side, energy recovery wheel return air side, and upstream of the main coil. Filter rack at main coil is field adjustable to accept up to 4-inch-thick MERV 14 filters, 1-inch-thick aluminum mesh filter at outdoor air intake hood.

Thermostat compatibility: Factory-installed microprocessor controller and discharge air temperature sensor allow for stand-alone operation of connection to LG AC Smart touchscreen controller for remote control.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Factory-installed energy recovery wheel; factory-installed heat recovery box; factory-installed fully modulating hot gas reheat coil; secondary heat recovery coil on exhaust air side of energy recovery wheel; and microprocessor controller with built-in user graphics. Airflow monitor sensor on supply fan. ECM motors for supply and exhaust fans allow for CFM control to maintain constant volume airflow rate even as external static pressures changes with dirty filters. Dirty filter alarm.

Warranty information: Standard limited one-year parts warranty. For complete warranty details visit, lg-dfs.com/warranty.aspx/.

Special installation requirements: Manufacturer did not specify.

Contact: LG Electronics U.S.A. Inc., 917-664-1758; www.lghvac.com.

FCB1000N, FCB1500N, FCB2000N, FCB2500N, FCB3000N, FCB4000N, FCB5000N, FCB6000N

Serviceability features: CREST boilers with Hellcat combustion technology offers supreme serviceability for technicians. The newly optimized, cutting-edge 10-inch capacitive touchscreen provides seamless updates and protocol enhancements. A completely unique integrated controls platform also features LED status and fault indicators on the control boards to help with diagnosis in the field. The refined industrial design features narrower front doors and lighter, yet more durable, side panels that make maneuvering and servicing a snap.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Boilers feature a revolutionary O2 sensor system designed for a condensing hydronic boiler and adapts to rapidly changing environmental conditions. Seasonal changes, drastic weather shifts, and altitude are all compensated for. No matter what is happening outside, Hellcat combustion technology is automatically adjusting for optimal combustion. The control platform learns the optimal settings and logs that information in real time, allowing it to adjust to any environmental condition.

Warranty information: Five-year limited warranty on burner and 18 months on all other parts.

Special installation requirements: Contractors can refer to the installation and operation manual for details on installation.

Contact: Lochinvar, 615-889-8900; www.lochinvar.com.

KBX0400N, KBX0500N, KBX0650N, KBX0800N, KBX1000N

Serviceability features: The newly refined boiler remains the dependable workhorse with a new touchscreen control, increased efficiency, 10:1 turndown ratio, and longer vent lengths. These units come standard with Lochinvar’s CON·X·US® and SMART TOUCH™ control platforms, which connect technicians to units from internet-capable devices. These systems provide technicians status alerts when equipment needs attention. The 7-inch touchscreen allows parameters to be easily adjusted. The combustion air filter collects debris from the air, extending product life.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: With years of proven experience, the KNIGHT XL boiler expands on its already outstanding performance. The advanced units feature 97% thermal efficiency and up to 10:1 turndown ratio. An enhanced design of the stainless steel heat exchanger provides a 3% increase in thermal efficiency when compared to previous models, lowering operating costs and boiler emissions. Short-cycling of the heating system is reduced as a result of its 10:1 modulation turndown.

Warranty information: Ten-year limited warranty on the unit’s heat exchanger, as well as one year of limited coverage on all other parts.

Special installation requirements: Contractors can refer to the installation and operation manual for details on installation.

Contact: Lochinvar, 615-889-8900; www.lochinvar.com.

Serviceability features: The hinged front panel design means that unit can be serviced by just one person, especially in ceiling applications. A front cover interlock de-energizes unit when front cover is removed for added safety. The disposable air filter is mounted in inlet air stream; optional permanent and washable aluminum filters are available.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: The unit can connect to the SmartSeries Plus control which provides BMS connection via BACnet MS/TP. The control is also a digital touchscreen thermostat so if the BMS is not needed, the user can still set an accurate seven-day schedule of when the space is occupied and unoccupied to verify heat is delivered only when needed. This verifies the heater only runs when it is absolutely needed for energy savings.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The CUH was developed to match future aesthetics desired by architects. The unit features a locking mechanism for the front panel that allows contractors to install the unit without having to remove the door. This is especially effective when the heater is installed in ceilings. The new SmartSeries® Plus control is the first digital touchscreen control capable of running a fully programmable internal schedule and having the capability to connect to a BACnet Building Management System.

Warranty information: Products are warrantied against defects in workmanship and materials for one year from date of installation, except heating elements, which are warrantied against defects in workmanship and materials for five years from date of installation.

Special installation requirements: Designed for easy installation due to pre-made holes for mounting, its locking front panel, and knockouts that lead directly to a terminal block for easy wiring. The digital touchscreen of the SmartSeries Plus is simple to navigate so the user can simply change temperature, create a seven-day schedule, or setup the BACnet MS/TP BMS integration. There are two detailed manuals. One-person maintenance on ceiling applications with hinged front panel.

Contact: Marley Engineered Products, 312-565-4626; www.marleymep.com.

Serviceability features: Part of the CITY MULTI® line, this new unit brings sleek aesthetics and energy efficiency to any commercial building. For flexible installation, piping can be connected from the rear, base, or left-hand side of the unit. In addition, the optimally designed airflow passage has a small fan diameter allowing for compact installation. A washable, long-lasting, and easy-to-clean filter can be conveniently accessed through the front grille to simplify maintenance.

Noise-reduction features: At low speed, the operating sound level for models PKFY-P04NLMU-E, PKFY-P06NLMU-E, and PKFY-P08NLMU-E is just 22 dBA. The PKFY-08NLMU-E model offers the greatest sound level reduction of 12 dBA at low speed over its predecessor.

IAQ equipment supported: Unit features long-lasting, easy-to-clean filters.

Thermostat compatibility: Requires a special thermostat.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: A redesign of the previous model, the PKFY-NLMU features a modern style with a smaller chassis width and an expanded capacity range from 4,000 to 18,000 Btuh. Operating at whisper-quiet sound levels, the unit’s new horizontal airflow feature provides uniform air distribution and keeps air from blowing directly on occupants. The 4,000 Btuh model responds to the industry’s demand for low-capacity units with flexible designs for small spaces and passive applications.

Warranty information: The parts are warrantied to the original owner for a period of one year, and the compressor is warrantied for a period of seven years from the date of installation if installed by a licensed contractor. The parts and compressor will be warrantied for a period of 10 years to the original owner if the system is designed by a Diamond Designer™ using the Diamond System Builder™.

Special installation requirements: Manufacturer did not specify.

Contact: Mitsubishi Electric Trane HVAC US, 703-879-7757; www.mitsubishicomfort.com.

Serviceability features: Maintenance-centered design enhances serviceability, which promotes optimal performance and long life. Hinged control service access door. Pocket handles facilitate access to compressor and other component.

Noise-reduction features: In cooling and heating mode, fan speed dBA at 3 minutes is 62 Hz. In simultaneous heating and cooling (SHC) mode, fan speed dBA at 3 minutes is 60 Hz (condenser fan does not run in SHC mode)

IAQ equipment supported: Hydronic fan coils better address humidity with lower coil temperatures.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The MHRC captures 100% of the refrigeration process waste heat that is normally rejected into the air. The unit will operate in dedicated cooling, heating, or water-to-water simultaneous heating and cooling modes. This new innovative system can cool rooms, as well as heat showers, sinks, and a swimming pool with the same outdoor unit, thereby eliminating the need for and cost of traditional water heating methods.

Warranty information: Chiller parts are warrantied to be free from manufacturing defects for up to 12 months from the date of installation. The compressor and heat exchangers are warranted for five years from the date of installation.

Special installation requirements: All installations will require dedicated internet access for troubleshooting.

Contact: Multiaqua Inc., 864-850-8990; www.multiaqua.com.

Serviceability features: Easy-access, reusable, washable filters and onboard diagnostics with error codes. Component check function reports what the sensors are reading, targeted and actual frequency, indoor/outdoor fan speeds, EEV angle opening, compressor continuous run time, and causes of compressor stop.

Noise-reduction features: Twin rotary DC inverter compressor reduces friction during operation for smoother rotation with less vibration, resulting in a more efficient and far quieter unit.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Requires a special thermostat.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: When a one-temperature-fits-all heating and cooling solution just won’t do for a space, this mini-split system offers independent control over 2 to 3 different rooms with one just one outdoor condenser. With multiple configurations and heating in conditions down to -13°F, this Perfect Aire® system requires no ducts to deliver endless comfort control possibilities. Not only is it less invasive to install, this ductless unit is incredibly energy efficient.

Warranty information: No-hassle service guaranteed with comprehensive one-year product warranty and a dedicated U.S.-based customer service support team to assist with installation questions and troubleshooting.

Special installation requirements: Quick Connect systems can be used with a precharged line set to eliminate the need to flush and vacuum refrigerant lines. Line sets come in standard 15- and 25-foot options, or purchase a line set kit in 40-, 60-, and 70-foot lengths for longer runs.

Contact: Perfect Aire, 844-472-2473; perfectaire.us.

Serviceability features: Easy-access reusable, washable filters, and onboard diagnostics with error codes. Component check function reports what the sensors are reading, targeted and actual frequency, indoor/outdoor fan speeds, EEV angle opening, compressor continuous run time, and causes of compressor stop.

Noise-reduction features: Twin rotary DC inverter compressor reduces friction during operation for smoother rotation with less vibration, resulting in a more efficient and far quieter unit.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Requires a special thermostat.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: No ductwork to install. Designed to cool or heat in the same unit. Inverter compressor saves on electric bills. Control with a temperature-sensing remote control or smartphone app. Whisper-quiet operation. Anti-corrosion coating. Pre-charged line sets eliminate need to flush and vacuum refrigerant lines. Quick and easy installation.

Warranty information: No-hassle service guaranteed with comprehensive one-year product warranty and a dedicated US-based customer service support team to assist with installation questions and troubleshooting.

Special installation requirements: Manufacturer did not specify.

Contact: Perfect Aire, 844-472-2473; perfectaire.us.

Serviceability features: VERSA IC controls with high-definition touchscreen. Intuitive diagnostics with 3-D graphical displays, fault location display, and suggested remedies to faults. Document viewer on touchscreen display for instant access to vital product information. Access to Raymote, Raypak’s remote monitoring and diagnostics tool, provides real-time service notifications and data logging (optional). Multifunction LED status light doubles as a service light for maintenance. Outdoor protective bezel for touchscreen controls.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Up to 96.5% thermal efficiency at full rate. Dynamic Protection advanced patented controls system automatically adjusts the firing rate based on real-time changes in flow rates to optimize performance and protect the unit from overheating. Cascade up to eight heaters in parallel or sequential modulation modes. Three pump control (DHW, system, and boiler). Zero side clearance to combustibles. Indoor/outdoor construction standard. Raymote access (optional). SCAQMD rule 1146.2 certified ultra-low NOx (< 20 ppm).

Warranty information: Limited 20-year thermal shock warranty, limited 10-year heat exchanger warranty.

Special installation requirements: Manufacturer did not specify.

Contact: Raypak, 805-816-1864; raypak.com.

Serviceability features: VERSA IC controls with high-definition touchscreen. Intuitive diagnostics with 3-D graphical displays, fault location display, and suggested remedies to faults. Document viewer on touchscreen display for instant access to vital product information. Access to Raymote, Raypak’s remote monitoring and diagnostics tool, provides real-time service notifications and data logging. Multifunction LED status light doubles as a service light for maintenance. Outdoor protective bezel for touchscreen controls. Entirely serviceable from the front, rear, and top.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Up to 98% thermal efficiency at full rate. Dynamic Protection advanced patented controls system that automatically adjusts the firing rate based on real-time changes in flow rates to optimize performance and protect the unit from overheating. Vent protection with vent temperature sensor: select vent material during startup, and XVers L adjusts to optimize performance. Cascade up to eight heaters in parallel or sequential modulation modes. Zero side clearance to combustibles. Indoor/outdoor construction standard. Raymote access.

Warranty information: Limited 25-year thermal shock warranty, limited 10-year heat exchanger warranty

Special installation requirements: Manufacturer did not specify.

Contact: Raypak, 805-816-1864; raypak.com.

Serviceability features: Easy access to all components. Point-to-point labeled wire connections.

Noise-reduction features: 67 dB at 3 meters.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: RBI uses variable-speed inverter-driven compressors with load matching to maximize efficiency in both heating (to -20°F) and cooling modes. Inverter seamlessly modulates up and down based on load. Enhanced Vapor Injection (EVI) technology in scroll compressors, in conjunction with the high-efficiency condenser, provides improved efficiency, reliability, and heating capacities, making it ideal for severe ambient conditions in colder climates, while maintaining the ability to cool during the warmer seasons.

Warranty information: Five-year compressor, one-year parts.

Special installation requirements: Manufacturer did not specify.

Contact: RBI, 413-564-5779; www.rbiwaterheaters.com.

Serviceability features: UDX unit heaters are fixed with an external status indicating LED that blinks to notify building managers when there is a problem that needs to be serviced. The seven-segment display on the control board shows a fault code to make diagnosing issues during a service call quick and easy. Units also include a hinged service door with a quarter-turn latch that can easily be opened with a screwdriver.

Noise-reduction features: Vibration/noise isolated fan and venter motors are designed for low noise operation.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The UDX offers value-added features that make the unit easier to service, provide peace of mind to homeowners and building managers, and aesthetically adds to the space. The diagnostic LED signals when service is needed and the seven-segment display makes for quick diagnosis. Units feature a two-tone black and white powder-coat paint scheme and have clean rounded corners and edges with no visible screws or fasteners.

Warranty information: Five-year parts and 10-year heat exchanger.

Special installation requirements: Each size cabinet is easily suspended from either two or four suspension points, or an optional hanger kit for sizes 30-125 allows for ceiling mounting. The low-voltage terminal strip on the outside of the cabinet makes connecting control wiring easy with no panels to remove. For residential applications, the UDX includes a transformer for 24-volt controls for easy hookup to a thermostat.

Contact: Nortek Global HVAC, 800-422-4328; www.reznorhvac.com.

Serviceability features: UDZ unit heaters are fixed with an external status indicating LED that blinks to notify building managers when there is a problem that needs to be serviced. The seven-segment display on the control board shows a fault code to make diagnosing issues during a service call quick and easy. Units also include a hinged service door with a quarter-turn latch that can easily be opened with a screwdriver.

Noise-reduction features: Vibration/noise isolated fan and venter motors are designed for low noise operation.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The UDZ offers value-added features that make the unit easier to service, provide peace of mind to homeowners and building managers, and aesthetically adds to the space. The diagnostic LED signals when service is needed and the seven-segment display makes for quick diagnosis. Units feature a two-tone black and white powder-coat paint scheme, clean metal panels without any visible screws or fasteners, rounded corners and edges, and are embossed with the Reznor logo.

Warranty information: Five-year parts and 10-year heat exchanger.

Special installation requirements: Each size cabinet is easily suspended from either two or four suspension points, or an optional hanger kit for sizes 30-125 allows for ceiling mounting. The low-voltage terminal strip on the outside of the cabinet makes connecting control wiring easy with no panels to remove. For residential applications, the UDZ includes a transformer for 24-volt controls for easy hookup to a thermostat.

Contact: Nortek Global HVAC, 800-422-4328; www.reznorhvac.com.

Serviceability features: Renaissance™ product line offers a wide range of serviceability features called PlusOne® ServiceSmart package, which includes: Qwik-Change Flex-Fit Rack™, Qwik-Slide Blower Assembly™, and Qwik-Clean Drain Pan™. Rheem’s PlusOne SmartShield™ coil system features a full microchannel coil, which uses less refrigerant than traditional counterparts and minimizes the unit’s environmental impact.

Noise-reduction features: EC motor technology on the indoor blower fan ramps up to the desired speed, reducing stress on the fan components and noise from a sudden inrush of air. Because the airflow is cut in half during first stage cooling and constant fan operation, noise is much less during these modes of operation.

IAQ equipment supported: Located within the filter compartment, the Qwik-Change Flex-Fit Rack allows easy changeover between 2- and 4-inch standard size and readily available filters. Compatible MERV 8 and MERV 13 filters are available for this platform.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: The Renaissance Line offers a breadth of heating and cooling solutions and build-to-order systems to suit the customer’s business needs, design, and application requirements, so there’s no need to overpay for unnecessary packages. The efficiency level and factory-installed options needed are chosen, with most factory-installed options and field-installed accessories available across all product tiers, ensuring customers get a customized solution to suit their business needs.

Warranty information: Standard warranties of one year on parts, five years on the compressor, and 10 years on the heat exchanger.

Special installation requirements: Redesigned for today’s demanding commercial applications, the Renaissance line is packed with smart thinking — like high-quality critical components, lean manufacturing processes, and robust design features — including the strengthened, solid, single-piece top, durable panels, plus scroll compressor technology. Innovative Rheem engineering delivers easy installation, smart serviceability, and industry-leading efficiencies for uptime dependability in a wide range of rooftop environments.

Contact: Rheem Mfg. Co., 800-621-5622; www.rheem.com.

Serviceability features: Simplified chassis design with fewer panels and screws. Integral inverter check function eliminates the need for a separate tool to validate inverter operation. Simple troubleshooting using a PC or mobile device and communication converter using SNET Pro 2 software or SNET Mobile app (mobile app and hardware available Q1 2022).

Noise-reduction features: New fan blade and fan motor mount design reduces sound from the outdoor unit. Incredibly quiet inverter-driven compressors operate at low noise levels. Compressor jackets and BLDC motors throughout the system also help reduce noise inside and outside.

IAQ equipment supported: MERV 13 filters are available for select indoor units.

Thermostat compatibility: Requires a special thermostat; 24-vac thermostats can be applied to connected indoor unit(s) when using Samsung’s thermostat adapter (MIM-A60UN).

Replacement parts compatibility: Some shared parts and some unique parts. Shares replacement parts with other models.

Additional features: Artificial intelligence refrigerant leak detection will notify the building user in advance if a refrigerant leak is present much sooner than traditional methods. Active AI high/low pressure control studies operation and adjusts target low pressure and sets target high pressure automatically to reduce unnecessary high pressure in heating mode, thus saving energy. Active AI defrost learns optimal defrosting timing to increase heating duration and reduce defrost duration to provide optimal comfort.

Warranty information: Manufacturer did not specify.

Special installation requirements: DVM S2 features a new option to reduce the main liquid pipe from the outdoor unit to the first HR box or Y-joint to reduce overall system charge. When the main piping diameter of the liquid pipe is reduced, the amount of refrigerant that is added can be reduced by an average of over 30%. A high-performance super-cooling circuit is used to reflect the subcooling and pressure drop in the pipe.

Contact: Samsung HVAC, 817-914-4155; www.samsunghvac.com.

Serviceability features: External LED diagnostic lights and an easily accessible control panel allow ease of service.

Noise-reduction features: Manufacturer did not specify.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Shares replacement parts with other models.

The new XF/XC Series unit heaters provide the ultimate in application flexibility and performance durability. These single units are capable of either standard or separated combustion right out of the box without any physical modifications to the units themselves. No need for separate kits whatsoever. Each tubular unit heater comes complete with a 10-year heat exchanger, flue collector, and burner warranty. Units are available in sizes 100 to 400 MBH.

Warranty information: Ten-year heat exchanger, flue collector, and burner warranty.

Special installation requirements: Please refer to the XF/XC IOM for complete instructions. Units can be vented standard or separated combustion. Units can be vented standard combustion, two-pipe separated combustion, or concentric vented separated combustion.

Contact: Sterling HVAC Products, 413-564-5779; www.sterlinghvac.com.

Serviceability features: These rooftop units are engineered for simplified serviceability to lower the lifecycle costs of the unit. The new RTUToolkit app for Android and iOS allows contractors to simply scan a unique QR code on each rooftop, which enables on-demand access to unit-specific details, technical literature, and direct connection to technical support. Optional features include a Mobile Access Portal gateway that offers a Wi-Fi interface, allowing technicians to interface with the units from their cars.

Noise-reduction features: Sound attenuator and compressor sound blanket options minimize sound outputs.

IAQ equipment supported: Indoor air quality is maximized through optional features such as ultraviolet lights, humidifiers, and final filters.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Does not share replacement parts with other models.

Additional features: The expanded Omni Premier platform is designed for a faster installation and simplified startup, while significantly reducing operational costs over the life of the unit. Premier commercial rooftop units offer best-in-class standard efficiency levels and meet aggressive Department of Energy 2023 energy efficiency requirements. Premier rooftop units come standard with next-generation Smart Equipment and can connect seamlessly to a controls system. On-board controls support cloud-based data analytics, including fault detection.

Warranty information: Standard one-year parts and either a six-month or one-year promotional labor warranty when started by a certified contractor.

Special installation requirements: Dedicated factory support and contractor training help ensure proper installation, commissioning, and startup. Units arrive ready to go, with optional components such as smoke detectors installed at the factory to simplify code compliance and streamline the process. To help reduce the cost of crane required to set the unit, 60- to 80-ton cabinets can be supplied as a split-ship unit. Split-ship units are intended to be put back together in the field.

Contact: Johnson Controls, 833-242-7869; http://tempmaster-hvac.com/equipment/packaged-cooling-and-heating.

Serviceability features: All connections and troubleshooting points are in one convenient place: the easy-access master terminal board. Units feature through-the-base utility connections capability. IGC solid-state control for on-board diagnostics with LED error code designation, burner control logic, and energy-saving indoor fan motor delay. Access panels have easy-grip handles and no-strip screws.

Noise-reduction features: Quiet and efficient operation is provided by belt-driven evaporator fans and a fully insulated cabinet.

IAQ equipment supported: Duct-mounted CO2 sensor accessory available for field installation to provide demand-controlled ventilation capability (DCV). Optional economizer control accepts CO2 sensor for IAQ capability.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: Energy Star-qualified units feature dedicated vertical or horizontal airflow duct configuration models, high- and low-pressure switches, and scroll compressors. Units feature two-stage cooling with independent circuits and control. Factory-installed options include three heat options (high, medium, low), and medium- and high-static indoor fan option.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized stainless steel heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Contact: International Comfort Products, 317-240-5133; www.gotempstar.com.

Serviceability features: Large access panels feature easy-grip handles and no-strip screw technology. Air filters are accessed through a toolless filter access door. New unit control board layout connections make troubleshooting easy. Simple fan adjustments can be made to the ECM by setting the DC voltage through an intuitive switch/rotary dial. Units also have a corrosion-resistant, internally sloped, self-draining condensate pan.

Noise-reduction features: Fully insulated cabinet, isolated scroll compressors, and balanced indoor/outdoor fan systems. Indoor fan uses X-Vane/Vane Axial fan design with built-in, ramp-up speed technology to soften sound during startup. Units are built on a rigid base pan with base-rail design to maintain original design.

IAQ equipment supported: Factory and field fresh air economizers with capability for demand control ventilation. Economizers use fault detection diagnostic controls to ensure operation and control ventilation air at multi-speed motor operation. Units available in a variety of gas heat sizes to match specific climate zones and applications.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: X-Vane fan technology indoor fan system has 75% fewer moving parts than traditional belt drive systems and uses less energy. The new 5/16-inch round copper tube and aluminum plate condenser coils improve efficiency and reduce refrigerant charge. Simple fan adjustment is made with a reference DC volt chart and switch/rotary dial. Units have same footprint as 30 years ago, making them ideal for replacement. No special training required.

Warranty information: Fifteen-year limited warranty on optional stainless steel heat exchanger; 10-year limited warranty on aluminized heat exchanger; five-year limited warranty on compressor; one-year limited warranty on all other parts. Up to five-year extended parts warranty available.

Special installation requirements: Vane Axial fans always spin in the correct direction. Installers should perform a proper startup, which includes: checking three-phase compressors to ensure that they are phased correctly and measuring temperatures/pressures at startup to ensure the compressor is pumping. If the installer cannot check the cooling operation at startup (i.e., winter startup), then the cooling function should be disabled until the installer can return and complete proper startup.

Contact: International Comfort Products, 317-240-5133; www.gotempstar.com.

Serviceability features: All routine maintenance can be performed via the front access. Cabinet design eliminates 92% of fasteners, with only one screw needed to remove the access panel. Fan wheel and motor assembly removable from the front of the unit. Control box accessible from the front and easily removed for better access. Improved captive plug connections for all wiring. Refrigerant ports located on the front of the unit for easy access.

Noise-reduction features: All models now feature improved acoustics with standard and deluxe sound package options for super-quiet performance based on AHRI 260 ratings. Lined compressor enclosure with 1/2-inch cabinet insulation; 14-gauge compressor/water-to-refrigerant heat exchanger pan with second stage of vibration isolation; and compressor double vibration isolation. Water-to-refrigerant heat exchanger vibration isolation and 20-gauge single-wall front panel.

IAQ equipment supported: New Axiom™ heat pumps include expanded filtration options to provide cleaner indoor air for more peace of mind. Choose either MERV 8 or MERV 13 filters in 2- or 4-inch filter rack arrangements. IAQ drain pans are available in both polymer and stainless-steel materials.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts. Shares replacement parts with other models.

Additional features: Trane provides a complete system, combining water-source heat pumps and Trane heat pump chillers, which offers a total electric system for a building (eliminating or greatly reducing the need for a fossil-fuel-burning boiler). These products can also be used in a geothermal system, which lends itself to decarbonization. Wireless controls are available through Trane Air-Fi® wireless communications and zone sensors.

Warranty information: The standard Trane warranty is offered on all water-source heat pumps, plus a five-year compressor warranty. Extended warranties for parts, labor, and refrigerant are also available.

Special installation requirements: For installation, Trane’s new design requires much less clearance on the sides of the units. This is due to all routine maintenance being accessible from the front of the unit. Trane recommends installation on a pad to minimize vibration transmission and that units are located such that the first section of discharge duct be straight for at least three duct diameters with flexible duct and conduit connections.

Contact: Trane, 419-356-1572; www.trane.com/commercial.

Serviceability features: The unit fits through 36-inch doors and standard elevators and ships in easy-to-assemble modules for easy delivery. Hinged panels make it easy to conduct preventive maintenance and service. A modular indoor unit with integrated controls, the unit has an increased life expectancy, is easier to maintain, and reduces costs compared to rooftop installations. Advanced and premium Aurora controls for enhanced sensor and monitoring capabilities, onboard CFM control, and measurement built-in.

Noise-reduction features: Ultra-quiet AHRI 1060 certified energy recovery wheel. The double-wall cabinet provides a quiet operating DOAS unit.

IAQ equipment supported: Rather than being an aftermarket product that has to be pieced together to fit with other systems or control platforms, the Versatec DOAS is designed specifically as a WaterFurnace system. The DOAS module system contains the energy wheel, blowers, and variable-speed compressor(s), all seamlessly controlled by the Aurora controls. Optional Aurora sensors for added capabilities to monitor supply air, exhaust air, CO2 return, and much more.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The Versatec DOAS offers the benefits of an indoor unit that fully integrates with WaterFurnace controls for a complete system, providing flexibility, ease of use, and reliability. Installing the Versatec DOAS does not add structural cost to cut a hole in the roof and requires less labor to install when compared to traditional DOAS units. The easily accessible interior unit offers flexible configurations for multizone VAV, single-zone VAV, and CAV applications.

Warranty information: Standard WaterFurnace warranty.

Special installation requirements: The Versatec DOAS is designed for use in retrofit or new construction jobs and can fit through a standard doorway and freight elevator. Easy plug-and-play technology allows for installations in under two hours. Since the Versatec DOAS and Aurora Controls are a complete system, they’re designed to work together and provide greater dependability and peace of mind.

Contact: WaterFurnace Intl., 800-934-5667; www.waterfurnace.com.

Serviceability features: Long component life and reliability is vital in commercial applications, which is why this unit features all-aluminum rifled tube-and-fin air coils, as well as corrosion-proof composite or stainless steel drain pans to provide the building a long lifetime of reliable system operation.

Noise-reduction features: The optional IntelliStart soft starter will reduce the normal start current (LRA) by up to 60% to reduce light flicker, startup noise, and to extend the compressor life. The super-quiet sound package is standard, while an optional sound kit is available for units installed in areas that need even more noise dampening.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Shares replacement parts with other models.

Additional features: These heat pumps use variable-capacity compressors to offer the absolute best in efficiency and performance. Each model has a 25% to 100% capacity range or 4:1 turndown with load matching. Variable-speed systems provide high efficiency for maximizing LEED points. WaterFurnace’s unique, dedicated, 460-volt, five-speed ECM doesn’t require the use of a neutral, reducing labor costs. The product utilizes electronic expansion valves.

Warranty information: Units come with standard WaterFurnace warranty.

Special installation requirements: Manufacturer did not specify.

Contact: WaterFurnace Intl., 800-934-5667; www.waterfurnace.com.

Serviceability features: Compact cabinet design with quick access for ease of service. Horizontal units can be serviced through the unit bottom to virtually eliminate removing ceiling mounted units for service.

Noise-reduction features: Provided as standard, the unit has a unique dual-level vibration isolation system. A heavy-gauge mounting plate is isolated from the cabinet via a dense neoprene pad to minimize vibration transfer. The compressor is then isolated from the mounting plate with standard rubber in shear isolators to enhance the dual-level vibration isolation. The compressor is located in a well-insulated compartment separated from the air stream to minimize sound transmission.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: Capacities ranging from 1/2- to 5-ton with single-stage EERs up to 17 at water-loop heat pump (WLHP) conditions in a compact cabinet designed for ease of service. Horizontal units can be serviced through the unit bottom to virtually eliminate removing ceiling units for service. With optional hot gas reheat for temperature and humidity control, as well as hybrid heating and cooling, the CAS Series has flexibility over a wide range of applications.

Warranty information: One-year warranty on compressor and parts. Extended five-year warranty is optional.

Special installation requirements: Manufacturer did not specify.

Contact: The Whalen Co., 918-557-5828; www.whalencompany.com.

Serviceability features: Inner service panel is removable for access to the unit control wiring and internal piping. The acoustical panel has a flush-mounted design with a hinged door to allow easy filter removal without the use of tools. Lift-out stainless steel pan with P-trap covers the entire unit bottom and can be easily removed for cleaning.

Noise-reduction features: High-efficiency ECM has constant torque fan motor for low sound levels, quiet operation. Floating compressor design and cabinet isolation pad minimizes vibration transmission. Water hoses connect to the supply and return water piping, which isolates potential compressor vibration from the building piping system.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Compatible with most thermostats.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: This is a unique two-stage, vertical stack, water-source heat pump.

Warranty information: Cabinet carries a 15-month warranty, chassis carries a one-year warranty, compressor carries a five-year warranty, and the refrigeration circuit carries a five-year warranty.

Special installation requirements: Manufacturer did not specify.

Contact: The Whalen Co., 918-557-5828; www.whalencompany.com.

Serviceability features: YORK centrifugal CYK heat pumps include service valves that are conveniently located to facilitate transfer of refrigerant to a remote refrigerant storage/recycling system. Service valves are also included on the oil filters line to allow quick and easy cartridge oil filters replacing. Hinged water boxes allow fast and safe service access for cleaning heat exchanger tubes.

Noise-reduction features: The OptiSound Control feature continuously monitors the characteristics of the compressor discharge gas and optimizes the diffuser spacing to minimize gas-flow disruptions from the impeller. This innovative technology improves operating sound levels of the unit an average of 7 dBA, and up to 13 dBA on the largest models. It can also reduce part-load sound levels below the full-load level. In addition, the OptiSound Control provides the benefit of an expanded operating range.

IAQ equipment supported: Manufacturer did not specify.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Some shared parts and some unique parts.

Additional features: The unit has two centrifugal compressors in series, designed for superior high-head performance for heat pump, simultaneous cooling and heating, air-cooled, brine chilling, ice thermal, and district energy applications. Multiple compressors mean lower in-rush current and lower sound levels during operation. Capacity control on each compressor enables better performance at off-design conditions. The unit can be customized for specific design conditions and is available with a low-GWP refrigerant.

Warranty information: Supported by an extensive parts and service network, the extended parts and labor warranty can go up to 66 months.

Special installation requirements: None, same as YORK YK centrifugal chiller/heat pump.

Contact: Johnson Controls, 717-771-6364; www.johnsoncontrols.com.

Serviceability features: These rooftop units are engineered for simplified serviceability to lower the lifecycle costs of the unit. The new RTUToolkit app for Android and iOS allows contractors to simply scan a unique QR code on each rooftop, which enables on-demand access to unit-specific details, technical literature, and direct connection to technical support. Optional features include a Mobile Access Portal gateway that offers a Wi-Fi interface, allowing for technicians to interface with the units from their vehicles.

Noise-reduction features: Sound attenuator and compressor sound blanket options minimize sound outputs.

IAQ equipment supported: Indoor air quality is maximized through optional features such as ultraviolet lights, humidifiers and final filters.

Thermostat compatibility: Manufacturer did not specify.

Replacement parts compatibility: Does not share replacement parts with other models.

Additional features: The expanded YORK® Sun™ Premier platform is designed for a faster installation and simplified startup while significantly reducing operational costs over the life of the unit. Premier commercial rooftop units offer best-in-class standard efficiency levels and meet aggressive Department of Energy 2023 energy efficiency requirements. Premier rooftop units come standard with next-generation smart equipment and can connect seamlessly to a controls system. On-board controls support cloud-based data analytics, including fault detection.

Warranty information: Standard one-year parts and either a six-month or one-year promotional labor warranty when started by a certified contractor.

Special installation requirements: Dedicated factory support and contractor training help ensure proper installation, commissioning, and startup. Units arrive ready to go, with optional components such as smoke detectors installed at the factory to simplify code compliance and streamline the process. To help reduce the cost of crane required to set the unit, 60- to 80-ton cabinets can be supplied as a split-ship unit. Split-ship units are intended to be put back together in the field.

Contact: Johnson Controls, 833-242-7869; www.york.com/commercial-equipment/packaged-split-dx/packaged-rooftop-units/2550tpremier_ds/york-sun-premier-rooftop-units.

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