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Mr Heater Big Maxx Natural Gas Unit Heater; 125,000 BTU

Item J158323
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FREE Shipping + $40.00 Oversized Item Fee Market Price $1,199.29

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Ship to: Ashburn - 20149
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      Product Information

      Description, Reviews, Q&A

      Features & Specs


      Description. If you are looking to turn your garage or barn into a work space you can use all year-round, you will have to find a safe quiet and reliable heat source. This 125,000 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.

      • 125,000 BTU per hour
      • For use with natural gas
      • Heats up to 4,167 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
      • Heater accepts WiFi thermostats
      • Minimum 8 ft clearance from floor to base of heater required
      • 1/2in gas connection
      • Category 1 vertical, category 3 horizontal venting
      • Natural Gas to Liquid Propane conversion kit included
      • Thermostat sold separately - recommended 24V


      • Heating Area (Sq Ft) 4167
      • Weight 108
      • Model MHU125
      • Length 29.87
      • Width 31.62
      • Height 29.25
      • Use Residential Garages, Metal Buildings, Warehouses, Agricultural Building, Storage Buildings
      • Warranty 3 year Limited on parts and burner, 10 year limited on heat exchanger
      • Thermostat Sold Seperately
      • Fuel Type Natural Gas or Propane
      • Heat Type Forced Air
      • High Limit Safety Shut-off (HLS) Yes
      • Indoor Safe No
      • Ignition Electronic

      Mr Heater F260590

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (1)

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        Reviews of Mr Heater Accessories products have an average rating of 5 out of 5

          Questions & Answers

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