Mr. Heater 20,000-Btu Vent-Free Blue Flame Propane Heater

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Mr. Heater

20,000-Btu Vent-Free Blue Flame Propane Heater


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* Estimated stock levels as of Mon, Sep 25, 2023. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

  • 20,000 BTU per hour
  • For use with Liquid Propane
  • 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)
  • Legs and wall mounting hardware included
  • 4500 ft high altitude restriction


This Blue Flame 20,000 BTU Liquid Propane 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.



BTU 20000
Color White
Coverage Up to 700 sq. ft.
Fuel Tank Capacity 20# Propane Cylinder
Fuel Type Liquid Propane
Heat Type Blue Flame
Ignition Type Electronic
Maximum Elevation 4,500 ft
Run Time 21.59 hrs at Max BTU
Type Propane Heater
Usage Supplemental heat in cold rooms


Height 27 in
Length 23.75 in
Weight 26.75 lb
Width 11.25 in

Manufacturing Details
The following information is subject to change without notice

Manufacturer Warranty 1 yr limited
Prop 65 Warning Warning WARNING: Cancer and Reproductive Harm -

Related Documents

Brochure (PDF)

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