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Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU

Item # 233750899

Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
$2,799.99
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  • Online Only

Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU

Item # 233750899

Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Image showing Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
$2,799.99
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The Mr.Heater 400,000 Power Vented Unit Heater provides big heat for big spaces. With 400,000 BTU of heat, the heater spreads warmth through factories or warehouses up to 13,400 sq ft. A fan pulls air from the room to be heated, and the power vent system pumps exhaust out of the building through a single vent pipe. The design minimizes labor and makes for easy installation. Air louvers with three locking positions control the direction of the heat. Work in warmth with the Mr.Heater 400,000 Power Vented Unit Heater.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

Looking for more information on heaters? Check out our guide on heaters in the product documents section.

  • Provides 400,000 BTU heat output
  • Heats up to 13,400 sq ft
  • Performs at 82% thermal efficiency
  • Designed with an aluminized steel heat exchanger
  • Ships equipped for natural gas (LP conversion kit sold separately)
  • Air louvers with three locking positions to change direction of heat
  • Easily installs using 3/8 in - 16 tpi threaded rods (sold separately)
  • ETL Certified

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