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80,000 BTU Big Maxx Natural Gas Unit Heater with Propane Conversion Kit (MHU80 / F260560)

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SKU: F260560

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If you are looking to turn your garage or barn into a workspace you can use all year-round, you will have to find a safe quiet and reliable heat source. This 80,000 BTU Natural Gas Unit heater is the way to go. It uses a built-in electric high-velocity fan to pull cool air into the rear of the heater, across a heat exchanger, then forcing warm air into the surrounding areas.

These heaters only require 115V AC power and can be vented vertically or horizontally - please check local codes and restrictions. With a mounting clearance of only 1 inch, the supplied brackets, external access to power, and thermostat connections - installation is a cinch. With the Durable Spark ignition and robust factory standard self-diagnostic control module, we can offer a 3-year factory warranty on all parts and burners and a 10-year warranty on any defects in the heat exchanger. This heater offers the operating versatility and safety that you have come to expect from Mr. Heater.

  • 80,000 BTU per hour
  • For use with Natural Gas - Natural Gas to Liquid Propane conversion kit included
  • Heats up to 2,000 sq. ft.
  • Spark ignition features self-diagnostic control module
  • Includes 2 angle brackets for ceiling mount
  • Low Profile Design - Can be installed in low-ceiling buildings
  • Minimum 8 ft clearance from floor to base of heater required
  • 1/2in gas connection
  • Category 1 vertical, category 3 horizontal venting


ModelMHU80 (F260560)
Heating Area (Sq Ft)2667
Weight88.45 lbs
UseResidential Garages, Metal Buildings, Warehouses, Agricultural Building, Storage Buildings
ThermostatSold Seperately
Fuel TypePropane
Heat TypeForced Air
High Limit Safety Shut-off (HLS)Yes
Indoor SafeNo

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