Airrex AHSC-42R: 3.5-Ton Portable Heat Pump, R-454B, 220V/1Ph
$11,229.65
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The Airrex AHSC-42R 3.5-Ton Portable Heat Pump delivers 42,000 BTU/hr of cooling and 47,000 BTU/hr of heating for warehouses, manufacturing facilities, commercial buildings, and industrial applications. Featuring low-GWP R-454B refrigerant, this heavy-duty unit provides heating, cooling, and dehumidification with 220V single-phase operation.
Key Specifications:
- Cooling Capacity: 42,000 BTU/hr (3.5 Tons)
- Heating Capacity: 47,000 BTU/hr
- Electrical: 220V / 60Hz / Single Phase
- Cooling / Heating Current: 21A / 23.6A
- Airflow: 1,550 CFM
- Top Exhaust: 26″ (Optional 20″ Reducer)
- Warranty: 1-Year Parts & Labor / 3-Year Compressor
Optional Accessories:
16″ Flexible Ducting | 20″ Flexible Ducting | Top Exhaust Reducer | External Condensate Pump
Nationwide shipping available. Contact us for bulk pricing and availability.
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The Airrex AHSC-42R 3.5-Ton Portable Heat Pump delivers 42,000 BTU/hr of cooling and 47,000 BTU/hr of heating for demanding commercial and industrial environments. Designed for temporary and supplemental climate control, this high-capacity portable heat pump is ideal for warehouses, manufacturing facilities, equipment rooms, commercial buildings, and temporary HVAC applications.
Operating on 220V / 60Hz single-phase power, the AHSC-42R provides heating, cooling, and dehumidification in one heavy-duty portable system. The unit features lower-GWP R-454B refrigerant, high-capacity airflow, digital temperature controls, washable air filters, and locking swivel casters.
Whether you need temporary cooling during HVAC maintenance, supplemental heating for an industrial facility, or a flexible climate control solution for a commercial project, the Airrex AHSC-42R provides powerful performance throughout the year.
Key Features of the Airrex AHSC-42R
- 42,000 BTU/hr Cooling Capacity: Provides approximately 3.5 tons of cooling for commercial and industrial applications.
- 47,000 BTU/hr Heating Capacity: Delivers high-capacity supplemental heating for warehouses, manufacturing facilities, and commercial spaces.
- 220V Single-Phase Operation: Designed for facilities with compatible 220V / 60Hz single-phase electrical service.
- Low-GWP R-454B Refrigerant: Offers a lower global warming potential than traditional R-410A refrigerant.
- Heating, Cooling & Dehumidification: Combines three climate control functions in one portable system.
- High-Capacity Airflow: Delivers up to 1,550 CFM of conditioned airflow.
- Flexible Air Distribution: Features duct connections for directing supply and return air to appropriate locations.
- Portable Industrial Construction: Heavy-duty locking swivel casters allow the unit to be moved and secured in position.
- Digital Temperature Controls: Includes temperature adjustment, timer functionality, and user-friendly operation.
- Washable Air Filters: Removable filters simplify routine maintenance.
- Compressor Protection: Includes thermostatic protection and high- and low-pressure safety warnings.
- Optional Accessories: Compatible ducting, a top exhaust reducer, and an external condensate pump are available.
- Warranty Protection: 1-year limited product warranty and 3-year compressor warranty.
Common Applications for the Airrex AHSC-42R
Warehouses and Manufacturing Facilities
Warehouses and industrial facilities often require supplemental heating during colder months and targeted cooling during warmer conditions.
The Airrex AHSC-42R provides both functions in one portable unit, making it useful for production areas, assembly operations, packing stations, industrial equipment, and maintenance facilities.
Its 42,000 BTU/hr cooling capacity and 47,000 BTU/hr heating capacity make it an option for facilities requiring greater output than smaller portable heat pumps.
Rather than maintaining separate portable heaters and air conditioners, businesses can use the AHSC-42R for both seasonal heating and cooling needs when properly sized for the application.
Server Rooms and Data Center Cooling
Server rooms, networking equipment, and data center support areas generate significant heat during continuous operation.
The AHSC-42R can provide temporary or supplemental cooling during HVAC maintenance, equipment upgrades, or unexpected cooling failures.
Its 3.5-ton nominal cooling capacity may be suitable for larger equipment rooms or localized IT cooling applications.
Proper cooling-load calculations, airflow distribution, electrical service, condenser heat rejection, and condensate management are essential when installing portable cooling equipment around sensitive electronics.
For more information, read our Best Portable Spot Coolers for Server Rooms in 2026 guide.
Commercial Buildings and Healthcare Support Areas
The Airrex AHSC-42R can provide temporary or supplemental heating and cooling for commercial buildings, offices, healthcare support spaces, and institutional facilities.
Its portable construction makes it useful during building renovations, HVAC maintenance, and temporary facility operations.
For healthcare environments, equipment placement and operation should be evaluated against applicable facility requirements.
Temporary Heating and Cooling During HVAC Maintenance
When permanent HVAC systems are undergoing repairs or replacement, facilities may require temporary equipment to maintain suitable indoor conditions.
The AHSC-42R provides heating and cooling capabilities in one portable system, allowing businesses to respond to changing temperatures without installing permanent equipment.
It can support commercial renovations, planned HVAC shutdowns, emergency cooling situations, and temporary industrial climate control.
Explore additional equipment in our Portable Heat Pumps collection.
Airrex AHSC-42R Technical Specifications
| Specification | Airrex AHSC-42R |
|---|---|
| Cooling Capacity | 42,000 BTU/hr (3.5 Tons) |
| Heating Capacity | 47,000 BTU/hr |
| Suggested Coverage | Up to 1,400 sq. ft. under suitable conditions |
| Refrigerant | R-454B |
| Power Supply | 220V / 60Hz / Single Phase |
| Cooling Current | 21 Amps |
| Heating Current | 23.6 Amps |
| Manufacturer-Listed Fuse Size | 50 Amps |
| Cooling Airflow | 1,550 CFM |
| Supply Air Connection | 12-Inch Diameter |
| Return Air Connection | 16-Inch Diameter |
| Top Exhaust | 26-Inch Diameter |
| Optional Exhaust Reducer | 20-Inch Diameter |
| Cooling Operating Range | 65°F–118°F |
| Heating Operating Range | 50°F–81°F |
| Dehumidification Operating Range | 59°F–118°F |
| Dimensions (W × D × H) | 29″ × 57″ × 51″ |
| Weight | 553 lbs |
| Filters | Removable and Washable |
| Condensate Pump | Optional External Pump |
| Mobility | Locking Swivel Casters |
| Product Warranty | 1-Year Limited |
| Compressor Warranty | 3-Year |
Specifications are based on published AHSC-42R manufacturer/distributor literature. Actual performance depends on ambient conditions, humidity, airflow, and installation. Verify electrical requirements against the equipment nameplate before installation.
Installation and Electrical Requirements
The Airrex AHSC-42R operates on 220V / 60Hz single-phase electrical power.
This unit requires appropriate electrical service and cannot operate from a standard 115V household receptacle.
The manufacturer lists the following electrical characteristics:
- Cooling Current: 21 Amps
- Heating Current: 23.6 Amps
- Fuse Size: 50 Amps
The electrical connection, conductors, overcurrent protection, and installation requirements should be verified against the current manufacturer instructions and equipment nameplate.
Heating and Cooling Operation
The AHSC-42R provides heating and cooling through its commercial heat pump system.
The unit can be operated in either mode depending on the facility’s temperature requirements.
It also includes dehumidification functionality for applications requiring moisture removal.
The manufacturer specifies different ambient operating temperature ranges for cooling, heating, and dehumidification.
Air Distribution and Exhaust Requirements
The AHSC-42R features connections for supply and return airflow, as well as a top exhaust outlet.
The unit includes:
- 12-inch supply-air connection
- 16-inch return-air connection
- 26-inch top exhaust
- Optional reducer for a 20-inch exhaust duct
Proper duct sizing, airflow distribution, and exhaust routing are important for maintaining equipment performance.
The optional exhaust reducer allows appropriately sized 20-inch ducting to be used in compatible installations.
Condensate Management
The AHSC-42R removes moisture during cooling and dehumidification operation.
An optional external condensate pump is available for applications requiring automatic water removal.
Collected condensate must be directed to an appropriate drainage location according to the manufacturer’s installation requirements.
Optional Accessories for the Airrex AHSC-42R
The Airrex AHSC-42R supports optional accessories designed to improve air distribution, exhaust management, and condensate removal.
16-Inch Flexible Ducting
Optional 16-inch flexible ducting can be used in compatible air-distribution configurations for the AHSC-42R.
The unit’s 16-inch return connection allows air to be routed from designated areas according to the installation requirements.
Flexible ducting can be useful for industrial facilities, equipment rooms, and temporary HVAC applications.
Browse Flexible Ducting and Accessories
20-Inch Flexible Exhaust Ducting
The AHSC-42R features a 26-inch top exhaust that can be reduced to 20 inches using the optional manufacturer-compatible exhaust reducer.
With the appropriate reducer installed, 20-inch flexible ducting may be used to route exhaust air to a suitable discharge location.
This arrangement can improve installation flexibility when equipment must be positioned away from the exhaust destination.
Browse 20-Inch Ducting and Accessories
Optional Top Exhaust Reducer
A compatible top exhaust reducer is available to adapt the AHSC-42R’s 26-inch exhaust connection to 20-inch ducting.
This accessory should be selected when the installation requires a 20-inch exhaust duct rather than the unit’s standard exhaust configuration.
Contact Climate Control Solutions to confirm availability and the correct accessory for your installation.
Optional External Condensate Pump
An optional external condensate pump can be used for automatic condensate removal during cooling and dehumidification operation.
This can be useful for extended operation or applications where collected condensation must be pumped to a nearby drainage location.
Contact Climate Control Solutions for compatible condensate pump options.
Why Choose the Airrex AHSC-42R?
The Airrex AHSC-42R combines high-capacity cooling, powerful heating, and dehumidification in one commercial-grade portable HVAC system.
With 42,000 BTU/hr of cooling and 47,000 BTU/hr of heating, it offers flexibility for facilities requiring substantial temporary or supplemental climate control.
Its 220V single-phase operation, portable construction, digital controls, and optional ducting accessories make it an option for demanding commercial and industrial applications.
Compare Other Airrex Portable Heat Pumps
Climate Control Solutions offers portable heat pumps in multiple capacities:
- Airrex AHSC-14R – 1.2-Ton Portable Heat Pump — 13,600 BTU/hr cooling and 13,000 BTU/hr heating.
- Airrex AHSC-18R – 1.5-Ton Portable Heat Pump — 16,800 BTU/hr cooling and heating.
- Airrex AHSC-42P – Previous-Generation 3.5-Ton Heat Pump — Previous-generation model for comparison.
For more options, browse our full Portable Heat Pump collection or visit the Airrex Product Collection.
Frequently Asked Questions About the Airrex AHSC-42R
How many BTUs does the Airrex AHSC-42R provide?
The Airrex AHSC-42R delivers 42,000 BTU/hr of nominal cooling capacity and 47,000 BTU/hr of heating capacity.
Can the AHSC-42R both heat and cool?
Yes. The AHSC-42R is a portable heat pump providing heating, cooling, and dehumidification capabilities.
What electrical power does the AHSC-42R require?
The AHSC-42R operates on 220V / 60Hz single-phase electrical power.
The manufacturer’s technical specifications list 21A cooling current, 23.6A heating current, and a 50A fuse size. Electrical installation should follow the current equipment nameplate and manufacturer instructions.
Can the AHSC-42R operate on a standard 115V outlet?
No. The AHSC-42R requires 220V electrical service and cannot operate from a standard 115V receptacle.
How much space can the AHSC-42R heat or cool?
The AHSC-42R is advertised for spaces up to approximately 1,400 square feet under suitable conditions.
Actual coverage depends on insulation, ceiling height, ventilation, internal heat loads, outdoor temperatures, and the intended application.
What size exhaust duct does the AHSC-42R use?
The AHSC-42R features a 26-inch top exhaust connection. An optional exhaust reducer allows the use of compatible 20-inch ducting.
Does the AHSC-42R require a ceiling kit?
Not necessarily. The correct exhaust arrangement depends on the installation. The AHSC-42R uses a larger exhaust configuration than smaller Airrex portable heat pumps, so accessory compatibility should be confirmed before ordering.
Is a condensate pump included?
An external condensate pump is available as an optional accessory and can be purchased separately.
Can the AHSC-42R cool a server room?
Yes. The AHSC-42R can provide temporary or supplemental cooling for suitable server rooms and IT facilities when properly sized and installed.
What refrigerant does the AHSC-42R use?
The AHSC-42R uses R-454B refrigerant, which has a lower global warming potential than R-410A.
Can the AHSC-42R be used for temporary winter heating?
Yes. The AHSC-42R provides 47,000 BTU/hr of nominal heating capacity and can be used for supplemental heating within its specified heating operating range.
What is the warranty on the AHSC-42R?
The AHSC-42R includes a 1-year limited product warranty and a 3-year compressor warranty, subject to manufacturer terms.
Buy the Airrex AHSC-42R from Climate Control Solutions
Climate Control Solutions supplies Airrex portable heat pumps, spot coolers, and commercial heating and cooling equipment nationwide.
Whether you need one AHSC-42R for an industrial workspace or multiple units for a commercial project, our team can help with equipment selection, electrical requirements, optional accessories, and shipping arrangements.
Contact Climate Control Solutions for current pricing, availability, and bulk-order quotes.
Phone: (800) 633-8711
Email: [email protected]
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