Mr. Heater 20,000 BTU Blue Flame Natural Gas Vent Free Heater

F299721 Mr. Heater

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Mr. Heater 20,000 BTU Vent Free Blue Flame Natural Gas Heater

This Blue Flame 20,000 BTU Natural Gas Vent Free heater is the perfect supplemental heating solution even on the coldest days. This heater is conveniently equipped with a thermostat for superior control of the temperature in your space. Also, with a battery powered electronic ignition, starting it is a breeze – battery included. This unit can be permanently mounted to the wall or securely fastened to the floor with included mounting brackets and fasteners. A clean burning blue flame tube burner uses the natural convection of the burn to circulate warm comfortable air. With a factory standard Oxygen Depletion Sensor (ODS), rest assured this heater will provide you with years of comfortable and safe heat.

• 20,000 BTU per hour
• For use with Natural Gas
• Heats up to 700 sq. ft.
• Blue flame burner for even convection heat
• Thermostat for automatic temperature control
• Automatic low oxygen shut-off system (ODS)
• High Limit Safety Shut-off (HLS)
• Legs and wall mounting hardware included
• 4500 ft high altitude restriction

Heating Area (Sq Ft): 700
Maximum Elevation (Ft): 4500
Indoor Safe – Not for use in bathrooms, bedrooms, or recreational vehicles.
Use: Supplemental heat in cold rooms, additions, Sun rooms, Cabins
Fuel Type: Natural Gas
Heat Type: Blue Flame Convection Heat
Oxygen Depletion Sensor (ODS)
Electronic Ignition

(L x W x H) 11.25″ x 23.75″ x 27″
Weight: 26.75 lb.

Blower Fan Kit (F299201 Sold Seperately)


SKU F299721
Manufacturer Model # F299721
UPC 089301000858
Case Quantity 1
Weight 28.10 lbs
Carton Dimensions 23.75 × 27 × 12.5 in
BTU per hour

Heating Area