2026 REX NORDIC AH 310i

SUITABLE FOR SPACES UP TO 55 000 FT 3. 37"x12"x39.8" (WxDxH). $3,299

Rex Nordic AH-310i Infrared Heater

The Rex Nordic AH-310i puts out 51,000 BTU/h (15 kW) of silent, flue-free infrared heat for workshops, pole barns and service bays up to 53,000 ft (1,500 m). It runs on pump diesel or renewable diesel, draws only ~80 W from a standard outlet (120 V/60 Hz), and holds your set temperature automatically — 48 dB quiet, with no exhaust pipe and no smell.

The 11.9 gal (45 L) tank runs about 39 hours at full output (0.30 gal/h 1.14 L/h) and much longer under thermostat cycling. WiFi app control, LED soft-touch panel, 32104 °F thermostat, timers and automatic restart are all standard. Rolls on casters; no installation, no ductwork.

Specs: 51,000 BTU/h (15 kW) up to 53,000 ft (1,500 m) tank 11.9 gal (45 L) 0.30 gal/h (1.14 L/h) 48 dB ~80 W, 120 V/60 Hz 101 lb (46 kg).

Best for: 4060 shops, pole barns, ag outbuildings, commercial remodels.

* Maintenance heating example: in a normally insulated 500 m (~17,700 ft) industrial hall, holding +15 °C indoors at 0 °C outdoors, the automatic thermostat cycles the heater on and off — typical fuel use is about 2.5 L (0.66 gal) per 24 h. Continuous full-output use: 1.141.33 L/h. Actual consumption depends on space size, insulation and set temperature.

Heat output: 51,000 BTU/h (15 kW)
Coverage: up to 53,000 ft (1,500 m)
Fuel tank: 11.9 gal (45 L)
Fuel use: 0.30 gal/h (1.14 L/h)
Noise level: 48 dB
Power: ~80 W, 120 V/60 Hz
Weight: 101 lb (46 kg)
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