Mr. Heater MHC125FAV 125,000 BTU
#7 in Forced airFull 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$189.98
The Mr. Heater MHC125FAV 125,000 BTU and the Mr. Heater MH125QFAV 125,000 BTU are evenly matched, rated 3.3 and 3.3.
Mr. Heater MH125QFAV 125,000 BTU
#8 in Forced airFull 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$189.99
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.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every forced air propane heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Mr. Heater MHC125FAV 125,000 BTU | Mr. Heater MH125QFAV 125,000 BTU |
|---|---|---|
| Overall rating | 3.3/5 | 3.3/5 |
| Value 25% | 74 $1.52 per 1,000 BTU ($189.98, 125,000 BTU) | 74 $1.52 per 1,000 BTU ($189.99, 125,000 BTU) |
| Safety 30% | 40 flame-out shutoff; no safety listing published | 40 flame-out shutoff; no safety listing published |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
| Turndown 15% | 57 turns down to 75,000 BTU | 57 turns down to 75,000 BTU |
| Ignition 10% | 100 electric ignition | 100 electric ignition |
| Fuel options 5% | 50 runs on a bulk tank only | 50 runs on a bulk tank only |
Specifications
| Mr. Heater MHC125FAV 125,000 BTU | Mr. Heater MH125QFAV 125,000 BTU | |
|---|---|---|
| Heating | ||
| Heat output | 75,000 to 125,000 BTU | 75,000 to 125,000 BTU |
| Type | Forced air | Forced air |
| Use | Job sites and garages | Job sites and garages |
| Heats up to | 3,125 sq ft | 3,125 sq ft |
| Thermostat | No | No |
| Fan | Yes | Yes |
| Fuel and power | ||
| Fuel | Bulk tank | Bulk tank |
| Hose included | Yes | Yes |
| Ignition | Electric | Electric |
| Power needed | 120 V outlet | 120 V outlet |
| Safety | ||
| Safety listing | None published | None published |
| Flame-out shutoff | Yes | Yes |
| Build | ||
| Dimensions | - | 11.75 x 21.25 x 16 in |
| Weight | - | 22.1 lb |
| Warranty | 1 year | 1 year |
| Released | 2024-01 | - |