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Rex Nordic AH-310i Diesel Infrared Heater
Heating Larger Metal Buildings & Workshops
The Rex Nordic AH-310i delivers 51,000 BTU/h of infrared heat for larger garages, steel workshops, agricultural buildings, and commercial workspaces. With heating coverage rated up to 53,000 cubic feet, quiet operation, and automatic temperature controls, it offers a portable alternative to permanently installed heating systems.
How Infrared Heating Works
Unlike traditional forced-air heaters that primarily warm and circulate air, the Rex Nordic AH-310i uses infrared technology to warm people, floors, equipment, and surrounding surfaces.
This makes infrared heating especially useful in metal garages, workshops, and agricultural buildings where overhead doors are frequently opened. While heated air can escape quickly, surfaces that have absorbed infrared warmth can retain heat longer.
The AH-310i operates on #2 diesel or renewable diesel (HVO/R99) and uses a standard 120-volt electrical connection. Its 11.9-gallon fuel tank provides approximately 39 hours of operation under the manufacturer's stated conditions, with actual runtime depending on heating demand.
An automatic thermostat, remote control, timers, and Wi-Fi connectivity through the Rex Nordic app allow convenient temperature management. At approximately 48 decibels, the heater operates quietly enough for many working environments.
Actual heating performance depends on insulation, ceiling height, outdoor temperatures, and building conditions. Proper ventilation, safe clearances, and carbon monoxide detection are essential. Always follow the manufacturer's safety and operating instructions.
Specification AH-310i
Heat Output 51,000 BTU/h
Heating Coverage Up to 53,000 CF
Fuel Tank 11.9 Gallons
Fuel Consumption .30-.35 gal/hour
Fule Type Diesel
Noise Level 48 dB
Temperature Range 32-104 F
Electrical Requirements 120V / 60Hz
Power Consumption 80W maximum
Thermostat Automatic
Remote Control Included
Connectivity Wi-Fi / App
Weight 101 lbs
The AH-310i is worth considering for larger steel garages, workshops, farm buildings, and commercial spaces where portable heating is preferred over a permanently installed system.
Building size, insulation, ceiling height, and how frequently overhead doors are opened all influence heating requirements. The manufacturer's coverage rating is a useful starting point, but actual performance will vary.
At RightFit Building Center, we help customers plan metal garages and workshops while also offering heating solutions for those spaces. If you're comparing the AH-210i and AH-310i, we're happy to help you determine which model better fits your building.
