Rex Nordic AH-810i Infrared Heater

The Rex Nordic AH-810i delivers 75,000 BTU/h (22 kW) of silent infrared heat for spaces up to 70,600 ft³ (2,000 m³) — warehouses, industrial halls and large job-site interiors. No exhaust pipe, no diesel smell, no installation: plug into a standard outlet (~80 W draw, 120 V/60 Hz), fill the 18.5 gal (70 L) tank with pump diesel, set the thermostat, and get back to work.

Infrared warms people, floors and equipment directly instead of blowing hot air to the ceiling — so comfort arrives at working height and recovers fast after a door opens. The patented triple-combustion burner with ceramic-coated heat exchanger is why there's no flue and no smell, and internal sound damping keeps the unit at 48 dB: conversation-level, all shift long.

Smart controls come standard: WiFi (optional 4G) with the Rex Nordic App for remote start and temperature control, a soft-touch LED panel, thermostat from 32–104 °F (0–40 °C), a 24-hour stop timer and interval cycling. Automatic restart resumes your settings after a power cut. At full output the burner uses 0.50–0.58 gal/h (1.9–2.2 L/h) — one tank runs 32–37 hours flat-out, and far longer under thermostat control.

Specs: Heat output 75,000 BTU/h (22 kW) · Coverage up to 70,600 ft³ (2,000 m³) · Fuel tank 18.5 gal (70 L) · Fuel use 0.50–0.58 gal/h (1.9–2.2 L/h) · Noise 48 dB · Power draw ~80 W, 120 V/60 Hz · Weight 179 lb (81 kg) · Fuel: #2 diesel or renewable diesel (HVO/R99); winter-grade below 50 °F.

Best for: warehouse bays, manufacturing halls, equipment storage, event build-outs, curing and thaw work on enclosed sites (follow the manual's ventilation and clearance guidance).