Diesel Heaters

“Roll it in. Fill it full of diesel. Plug it in. Away you go — and you’ll be warm for a long time.”
Eric Crose

No chimney. No gas line. No hydro contract. Just heat.

AH-210i — The Small One
(44,000 BTU/h | Heats up to 31,800 ft³ / 900 m³)

Don’t let “small” fool you — this thing will heat a two or three-car shop, a drive shed, or a calving barn without breaking a sweat. Roll it in, pour in the diesel, plug it into a standard outlet, and you’re done. No chimney, no venting, no contractor. It runs quieter than you’d expect at 48 dB, and at only a quarter gallon of diesel per hour, your farm tank goes a long way. If every farm’s already got diesel for the tractors, this just makes sense.

Covers up to 31,800 ft³ (900 m³) · 44,000 BTU/h · 6.6 gal tank · 0.25 gal/h

AH-310i — The Mid-Size
(51,000 BTU/h | Heats up to 53,000 ft³ / 1,500 m³)

This is the one for bigger shops, pole barns, and large service bays. Same idea — no exhaust pipe, no permanent install, no fuss — just more heat for more space. At 51,000 BTU/h, it’ll knock the chill out of a big workspace fast, and the 45-litre tank means you’re not running back to fill it up every few hours. No smell, no carbon monoxide — just clean, quiet heat. Fill a jerry can from the farm diesel tank and you’re set.

Covers up to 53,000 ft³ (1,500 m³) · 51,000 BTU/h · 11.9 gal tank · 0.30 gal/h

AH-810i — The Big One
(75,000 BTU/h | Heats up to 70,600 ft³ / 2,000 m³)

Warehouses. Large equipment storage. Industrial-scale ag buildings. This is the unit. At 75,000 BTU/h, it heats spaces most people would assume you’d need a full HVAC system for — and you’re still just rolling it in on casters and plugging into a standard outlet. No chimney. No smell. No CO. The 70-litre tank keeps it running without constant babysitting, and it stays quiet the whole time at 48 dB. If you’ve got a big operation and you need heat on your terms, this is it.

Covers up to 70,600 ft³ (2,000 m³) · 75,000 BTU/h · 18.5 gal tank · 0.50–0.58 gal/h

DISCLAIMER: The Rex Nordic site mentions “a mild odour may occur during initial start-up and shut-down only.” Also, Rex Nordic’s FAQ says exhaust piping is required for sleeping quarters or spaces with very limited ventilation.