A forced-air propane heater, often called a torpedo heater, blows a fan through a burner tube and pushes out 30,000 to 400,000 BTU an hour, enough to warm a garage or a framed house under construction. The fan needs an outlet or a battery, and most run from a 20 lb or larger tank on a hose. They’re made for spaces with fresh air coming in, not living areas: every one burns a lot of oxygen, and the bigger ones are loud.
Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Full ranking 18
- Reddy Heater RFG60V 60,000 BTU#1 of 18Full review
For a garage, shop or job site that wants a 60,000 BTU torpedo heater with a wide turndown and a two year warranty. Keep fresh air coming in while it runs.
Amazon $136$13660,000 BTU30,000 BTU-CSA - Reddy Heater RFG60DC 60,000 BTU Hybrid#2 of 18Full review
For crews already on DeWalt or Milwaukee batteries who need torpedo heat where there is no outlet. Ventilate the space as the manual requires.
Amazon $158.75$158.7560,000 BTU36,000 BTU-CSA - Flame King YSN-AD018 60,000 BTU#3 of 18Full review
For garages and job sites that want a 60,000 BTU torpedo heater that also shuts off if tipped. Run it only with a steady supply of fresh air.
Amazon $159.95$159.9560,000 BTU--CSA - DeWalt DXH90FAV 90,000 BTU#4 of 18Full review
For job sites, barns and large garages with fresh air that need more heat than a 65,000 BTU heater. It is a construction heater, not for living spaces.
Amazon $230.77$230.7790,000 BTU50,000 BTU-ETL - DeWalt DXH70CFAV 68,000 BTU Cordless#5 of 18Full review
For contractors already on DeWalt 20V batteries who need heat on sites without power. It is a construction heater for ventilated spaces, not living areas.
Amazon $237.22$237.2268,000 BTU27,000 BTU-CSA - InoKraft MAXHEAT MH85 Thermostat#6 of 18Full review
For a garage or shop that wants an 85,000 BTU torpedo heater to hold a set temperature on its own. Keep the space well ventilated.
Amazon $179.99$179.9985,000 BTU--CSA - Mr. Heater MHC125FAV 125,000 BTU#7 of 18Full review
For job sites, barns and big workshops with fresh air that want 125,000 BTU from Mr. Heater’s Contractor line. It is a construction heater, not for living spaces.
Amazon $189.98$189.98125,000 BTU75,000 BTU-No - Mr. Heater MH125QFAV 125,000 BTU#8 of 18Full review
For contractors, barns and large workshops that need a lot of heat fast with fresh air coming in. It is a construction heater, not for living spaces.
Amazon $189.99$189.99125,000 BTU75,000 BTU-No - VEVOR ZB-G125A 125,000 BTU#9 of 18Full review
For big shops, barns and job sites that need a lot of heat for little money. Use it only in ventilated spaces or outdoors.
Amazon $156.99$156.99125,000 BTU100,000 BTU-No - VEVOR ZB-G60A 60,000 BTU#10 of 18Full review
For a budget garage or job site heater from a 20 lb tank where a safety listing is not required. Keep the space ventilated.
Amazon $109.90$109.9060,000 BTU40,000 BTU-No - DeWalt DXH150FAV 150,000 BTU#11 of 18Full review
For large job sites, barns and warehouses with plenty of fresh air that need maximum heat. Smaller garages are better served by a heater that turns down further.
Amazon $251.21$251.21150,000 BTU110,000 BTU-No - Mr. Heater MH400FAVT 400,000 BTU#12 of 18Full review
For large construction sites, barns and warehouses that need heat on an industrial scale from a bank of 100 lb tanks. Use it only with plenty of fresh air.
Amazon $665.84$665.84400,000 BTU250,000 BTU-No - Remington REM-60V-GFA-O 60,000 BTU#13 of 18Full review
For a cheap, light torpedo heater to warm a garage bay or job site from a 20 lb tank. Use it only with a fresh air opening, as the manual sets out.
Amazon $114.99$114.9960,000 BTU40,000 BTU-No - DeWalt DXH65FAV 65,000 BTU#14 of 18Full review
For garages, job sites and barns with fresh air that need fast heat from a standard 20 lb tank. It is a construction heater, not for living spaces.
Amazon $168.35$168.3565,000 BTU30,000 BTU-No - Mr. Heater MH85QFAV 85,000 BTU#15 of 18Full review
For garages, barns and job sites with fresh air that need strong heat from a 20 lb tank. It is a construction heater, not for living spaces.
Amazon $199.05$199.0585,000 BTU50,000 BTU-No - Dyna-Glo Delux RMC-FA60DGD#16 of 18Full review
For garages, sheds and job sites with fresh air that want a light 60,000 BTU heater on a 20 lb tank. It is a construction heater, not for living spaces.
Amazon $159.99$159.9960,000 BTU30,000 BTU-No - Craftsman CMXEHAO60FAV 60,000 BTU#17 of 18Full review
For a shop or barn that wants a 60,000 BTU torpedo heater that turns down to half power. Keep it in a well-ventilated space.
Amazon $123.27$123.2760,000 BTU30,000 BTU-No - Dyna-Glo Workhorse LPFA40WH#18 of 18Full review
For small garages, sheds and job sites with fresh air that need cheap, simple heat. It is a construction heater, not for living spaces.
Amazon $121.52$121.5240,000 BTU40,000 BTU-No