InoKraft MAXHEAT MH85 Thermostat
#6 in Forced airFull 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$179.99
3.3/5
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.
- 75,000 to 125,000 BTUHeat output
- Job sites and garagesUse
- None publishedSafety listing
- 1 yearWarranty
Check price at Amazon$189.99
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Turns down from 125,000 to 75,000 BTU, so one heater covers a big shop on cold days and milder ones
- Shuts the gas off if the flame goes out, and cuts out if it overheats
- Quieter than a standard torpedo heater, by Mr. Heater’s claim of 50% less noise
- Comes with the 10 ft hose and regulator
Cons
- Needs a 40 lb tank or larger, so a 20 lb grill tank won’t do
- Needs a 120V outlet or generator to run its fan and igniter
- Construction heater only: not for homes or RVs, and only in well ventilated spaces
- No thermostat, so you adjust the heat by hand
The Mr. Heater Quiet Burner family
Every Mr. Heater Quiet Burner model we rank, smallest first. Ratings compare each against its own type.
| Model | Heat output | Rating | Price |
|---|---|---|---|
| Mr. Heater MH85QFAV 85,000 BTU | 50,000 to 85,000 BTU | 3.1/5 | $199.05 |
| Mr. Heater MH125QFAV 125,000 BTU (this one) | 75,000 to 125,000 BTU | 3.3/5 | $189.99 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | MH125QFAV (F271390) |
|---|---|
| Heating | |
| Heat output | 75,000 to 125,000 BTU |
| Type | Forced air |
| Use | Job sites and garages |
| Heats up to | 3,125 sq ft |
| Thermostat | No |
| Fan | Yes |
| Fuel and power | |
| Fuel | Bulk tank |
| Hose included | Yes |
| Ignition | Electric |
| Power needed | 120 V outlet |
| Safety | |
| Safety listing | None published |
| Flame-out shutoff | Yes |
| Build | |
| Dimensions | 11.75 x 21.25 x 16 in |
| Weight | 22.1 lb |
| Warranty | 1 year |
Alternatives in this type
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
VEVOR ZB-G125A 125,000 BTU
#9 in Forced airFull 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$156.99
Compare
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