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 ft³ (1,500 m³). 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, 32–104 °F thermostat, timers and automatic restart are all standard. Rolls on casters; no installation, no ductwork.
Features
51,000 BTU/h (15 kW) for spaces up to 53,000 ft³ (1,500 m³)
WiFi connectivity with the Rex Nordic App (Android/iOS)
Runs on standard #2 pump diesel or renewable diesel (HVO/R99)
11.9 gal (45 L) fuel tank — about 39 hours per fill at full output
Fuel use 0.30 gal/h (1.14 L/h); thermostat cycling cuts real-world consumption
Automatic thermostat, 32–104 °F (0–40 °C)
24-hour stop timer and interval timer
Automatic restart resumes your settings after a power cut
Tilt detection, overheating protection, automatic shutdown
Soft-touch LED control panel
Ultra-quiet 48 dB operation
Rolls on casters — no installation, no ductwork
~80 W draw from a standard 120 V/60 Hz outlet · 101 lb (46 kg)
Use cases:
40×60 shops
Pole barns
Service bays
Agricultural outbuildings
Commercial remodels
Workshops
Specs

Downloads
Brochure
User Manual