Mr. Heater MHC125FAV 125,000 BTU

Last updated: October 30, 2026

Mr. Heater MHC125FAV 125,000 BTU
3.3/5#7 of 18 in forced air propane heaters
3.3

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.

  • 75,000 to 125,000 BTUHeat output
  • Job sites and garagesUse
  • None publishedSafety listing
  • 1 yearWarranty
Check price at Amazon$189.98

Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Turns down from 125,000 to 75,000 BTU for big spaces in hard or mild cold
  • Shuts the gas off if the flame goes out, and cuts out if it overheats
  • Comes with the 10 ft hose and regulator
  • Continuous spark relights unburned gas instead of letting it pool
Cons
  • Needs a 120V outlet or generator to run
  • Construction heater for ventilated spaces only, not living areas
  • Mr. Heater doesn’t list it on its own site, so specs come from the manual and retailers
  • No thermostat, so you adjust the heat by hand

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 numberMHC125FAV (F200202)
Heating
Heat output75,000 to 125,000 BTU
TypeForced air
UseJob sites and garages
Heats up to3,125 sq ft
ThermostatNo
FanYes
Fuel and power
FuelBulk tank
Hose includedYes
IgnitionElectric
Power needed120 V outlet
Safety
Safety listingNone published
Flame-out shutoffYes
Build
Warranty1 year
Released2024-01

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