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

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

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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

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

Item # 233750899

Mr. Heater Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
Mr. Heater Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 13,500 sq. ft., 400,000 BTU
$2799.99
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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
BrandMr. Heater
Country of OriginImported
Assembly RequiredPartial
Cabinet or Housing MaterialSteel
FinishPowder-Coated
Heater Area Heated13500 Sq ft
Heater FeaturesElectronic Ignition, Built-In Thermostat
Installation TypeCeiling mount
Heater Maximum BTU Heat Output Range140,000 or more
Heater StyleCompact
Heater TypeForced Air
Indoor/OutdoorIndoor
Intended Use GradeIndustrial, Commercial
Maximum BTU Heat Output400,000 BTU
Number Of Heat SettingsVariable
Power TypeNatural gas
Product Height45.5 in.
Product Length38 in.
Product Weight302 lb.
Product Width41.75 in.
Run Time24 hr.
Warranty3 year limited warranty on parts (1 year in high humidity or caustic environments) ; 10 year limited warranty on aluminized steel heat exchanger (5 years when installed in corrosive environments)
Manufacturer Part NumberF263066
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