Skip to main content

Sign In / Enroll

Get rewarded!

0.0 out of 5 stars.

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
Highlights
  • Maximum BTU Heat Output:400,000 BTU
  • Heater Area Heated:13500 Sq ft
  • Power Type:Natural gas
View more details
$2,799.99
Add a protection plan
What's included
Powersport plans are not available in CA & MD.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

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
Highlights
  • Maximum BTU Heat Output:400,000 BTU
  • Heater Area Heated:13500 Sq ft
  • Power Type:Natural gas
View more details
$2799.99

This item is available online only

Delivering to

37027

Notice:
This Item cannot be shipped to HI.
Add a protection plan
What's included
Powersport plans are not available in CA & MD.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

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.

  • 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

Similar Items

  1. Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 10,000 sq. ft., 300,000 BTU
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 10,000 sq. ft., 300,000 BTU

    $2,299.99
  2. Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 7,000 sq. ft., 200,000 BTU
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 7,000 sq. ft., 200,000 BTU

    $1,899.99
  3. Mr. Heater Natural Gas Big Maxx Unit Heater, 1,250 sq. ft., 50,000 BTU
    4.4 out of 5 stars with 17 reviews (17)

    Mr. Heater Natural Gas Big Maxx Unit Heater, 1,250 sq. ft., 50,000 BTU
  4. Mr. Heater 250,000 BTU Big Maxx Natural Gas Standard Combustion Power Vented Unit Heater with Aluminized Steel Heat Exchanger
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater 250,000 BTU Big Maxx Natural Gas Standard Combustion Power Vented Unit Heater with Aluminized Steel Heat Exchanger

    $2,199.99
  5. Mr. Heater Propane to Natural Gas Conversion Kit 250K BTU Unit Heaters
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater Propane to Natural Gas Conversion Kit 250K BTU Unit Heaters

    $49.99
  6. Mr. Heater Unit Heater Fuel Conversion Kit NG to LP
    4.0 out of 5 stars with 1 reviews (1)

    Mr. Heater Unit Heater Fuel Conversion Kit NG to LP

    $44.99
  7. Mr. Heater 25,000 BTU Liquid Propane Convection Heater
    4.4 out of 5 stars with 7 reviews (7)

    Mr. Heater 25,000 BTU Liquid Propane Convection Heater

    $129.99
  8. Mr. Heater Propane Hunting Buddy Portable Heater, 300 sq. ft., 12,000 BTU
    4.7 out of 5 stars with 76 reviews (76)

    Mr. Heater Propane Hunting Buddy Portable Heater, 300 sq. ft., 12,000 BTU

    $169.99
  9. Top Rated
    Mr. Heater Propane Forced Air Heater, 950 sq. ft., 38,000 BTU
    4.8 out of 5 stars with 5 reviews (5)

    Mr. Heater Propane Forced Air Heater, 950 sq. ft., 38,000 BTU

    $167.99
    Was $209.99Save $42.00
  10. Top Rated
    Mr. Heater Propane Portable Convection Heater, 5,000 sq. ft., 200,000 BTU
    4.8 out of 5 stars with 56 reviews (56)

    Mr. Heater Propane Portable Convection Heater, 5,000 sq. ft., 200,000 BTU

    $154.99
  11. Mr. Heater 80000 BTU Forced Air Kerosene Heater
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater 80000 BTU Forced Air Kerosene Heater

    $199.99
    Was $249.99Save $50.00
  12. Mr. Heater 140000 BTU Forced Air Kerosene Heater
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater 140000 BTU Forced Air Kerosene Heater

    $279.99
    Was $349.99Save $70.00

Top Holiday Deals

Customers Also Bought

  1. Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 10,000 sq. ft., 300,000 BTU
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 10,000 sq. ft., 300,000 BTU

    $2,299.99
  2. Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 7,000 sq. ft., 200,000 BTU
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater Natural Gas Big Maxx Standard Combustion Power Vented Unit Heater, 7,000 sq. ft., 200,000 BTU

    $1,899.99
  3. Mr. Heater 250,000 BTU Big Maxx Natural Gas Standard Combustion Power Vented Unit Heater with Aluminized Steel Heat Exchanger
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater 250,000 BTU Big Maxx Natural Gas Standard Combustion Power Vented Unit Heater with Aluminized Steel Heat Exchanger

    $2,199.99
  4. Mr. Heater Natural Gas Big Maxx Unit Heater, 1,250 sq. ft., 50,000 BTU
    4.4 out of 5 stars with 17 reviews (17)

    Mr. Heater Natural Gas Big Maxx Unit Heater, 1,250 sq. ft., 50,000 BTU
  5. Mr. Heater Propane to Natural Gas Conversion Kit 250K BTU Unit Heaters
    0.0 out of 5 stars with 0 reviews (0)

    Mr. Heater Propane to Natural Gas Conversion Kit 250K BTU Unit Heaters

    $49.99
  6. Mr. Heater Propane Quiet Burner Technology Forced Air Heater, 1,500 sq. ft., 60,000 BTU
    4.7 out of 5 stars with 75 reviews (75)

    Mr. Heater Propane Quiet Burner Technology Forced Air Heater, 1,500 sq. ft., 60,000 BTU

    $149.99
  7. Mr. Heater Unit Heater Fuel Conversion Kit NG to LP
    4.0 out of 5 stars with 1 reviews (1)

    Mr. Heater Unit Heater Fuel Conversion Kit NG to LP

    $44.99
  8. Top Rated
    Mr. Heater Propane Forced Air Heater, 950 sq. ft., 38,000 BTU
    4.8 out of 5 stars with 5 reviews (5)

    Mr. Heater Propane Forced Air Heater, 950 sq. ft., 38,000 BTU

    $167.99
    Was $209.99Save $42.00
  9. Mr. Heater Propane Hunting Buddy Portable Heater, 300 sq. ft., 12,000 BTU
    4.7 out of 5 stars with 76 reviews (76)

    Mr. Heater Propane Hunting Buddy Portable Heater, 300 sq. ft., 12,000 BTU

    $169.99
  10. Top Rated
    Mr. Heater Propane Portable Convection Heater, 5,000 sq. ft., 200,000 BTU
    4.8 out of 5 stars with 56 reviews (56)

    Mr. Heater Propane Portable Convection Heater, 5,000 sq. ft., 200,000 BTU

    $154.99
  11. Mr. Heater Propane Big Buddy Portable Heater, 450 sq. ft., 18,000 BTU, Red
    4.7 out of 5 stars with 118 reviews (118)

    Mr. Heater Propane Big Buddy Portable Heater, 450 sq. ft., 18,000 BTU, Red

    $149.99
  12. Top Rated
    Mr. Heater Diesel/Kerosene Forced Air Heater, 2,000 sq. ft., 80,000 BTU
    4.8 out of 5 stars with 4 reviews (4)

    Mr. Heater Diesel/Kerosene Forced Air Heater, 2,000 sq. ft., 80,000 BTU

Reviews

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Be the first to review this product