Mr. Heater Big Maxx Natural Gas Utility Heater, 125,000 BTU

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Key Features

  • 125,000 BTUs per hour
  • Heats up to 4,167 sq. ft.
  • For use with natural gas or propane
  • Spark ignition features self-diagnostic control module
  • Low-profile design can be installed in low-ceiling buildings

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Whether you're looking to heat up your garage or turn your barn into a year-round work area, you'll love the safe and quiet operation of this Mr. Heater® Big Maxx® Natural Gas Utility Heater. It's heavy-duty, low-profile design pumps out an amazing 125,000 BTUs per hour and is capable of heating any area up to 4,167 sq. ft. Plus, it's incredibly easy to install since it can be vented vertically or horizontally and only requires 115V AC power.

  • 125,000 BTUs per hour
  • Heats up to 4,167 sq. ft.
  • For use with natural gas or propane
  • Spark ignition features self-diagnostic control module
  • Low-profile design can be installed in low-ceiling buildings
  • Accepts WiFi thermostats (not included)
  • Requires 8' minimum clearance from floor to base of heater and 1/2" gas connection
  • Category 1 vertical, category 3 horizontal venting
  • Includes 2 angle brackets for ceiling mount and natural gas to liquid propane conversion kit

Key Specifications

  • Item Number: 730662
  • BTU Per Hour: 125,000
  • Heating Area (sq. ft.): 4,167
  • Fuel Type: Natural gas / propane
  • Heat Type: Forced air
  • High Limit Safety Shut-off (HLS): Yes
  • Indoor Safe: No
  • Ignition: Electronic
  • Dimensions: 29.87"l. x 31.62"w. x 29.25"h.
  • Mfg. Number: F260590