Mr. Heater F260590 MHU125NG NG Unit Heater, 125K BTU, Tan/Grey Color, Efficient Heating Solution

★★★★★ 4.3 116 reviews

US$376.97
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US$376.97
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 241645723 Release Date 2026/07/18 List Price US$376.97 Model Number 241645723
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The Mr. Heater Big Maxx 125,000 BTU unit heater is designed to transform your garage or barn into a comfortable workspace year-round. This powerful heater efficiently warms large spaces, making it an ideal solution for workshops, garages, and barns.

Featuring a built-in high-velocity electric fan, the Mr. Heater Big Maxx pulls cool air in and circulates it across the heat exchanger, delivering warm and comfortable air throughout the area. With a low-profile design requiring only a 15 ft. minimum ceiling height and 1 in. mounting clearance, this unit is perfect for various settings. The heater is equipped with essential safety features, including a high-temperature safety shut-off, gas safety shut-off flame sensor, and electric spark ignition with a self-diagnostic control module, ensuring peace of mind while using the heater. The unit operates on natural gas and comes with a propane conversion kit and ceiling mounting brackets, offering versatile installation options. It requires 120-Volt AC power and can be vented either vertically or horizontally, making it compliant with local codes and restrictions.

Key Features:
  • Heating capacity of 125,000 BTU, covering up to 2000 square feet.
  • Built-in high-velocity electric fan for efficient heat distribution.
  • Electronic ignition for reliable and effortless starting.
  • Safety features including high-temperature shut-off and flame sensor.
  • Versatile installation with options for vertical or horizontal venting.
  • Includes propane conversion kit for flexible fuel options.
  • Available in TAN or GREY color (color may vary).

The Mr. Heater Big Maxx 125,000 BTU unit heater is an excellent choice for homeowners, DIY enthusiasts, and professionals who require reliable heating in large spaces. Its combination of safety features, efficient performance, and versatile installation options makes it a valuable addition to any workspace. Experience comfort and warmth all year round with this dependable heating solution.


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4.3 out of 5
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116 ratings | 48 reviews
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