Mr. Heater, 20,000 BTU Vent Free Blue Flame Natural Gas Heater w/BlowerCategory: Automatic Blower HeaterMr. Heater Vent Free Blue Flame Propane Heater20,000 BTU per hourHeats up to 500 square feetFor use with propane gasBlue flame burner for even convection heatQuiet integrated blower for gentle circulation of heated airThermostat for automatic temperature controlAutomatic low oxygen shut-off system (ODS)Legs and wall mounting hardware includedMr. Heater Vent Free Blower Fan KitComplete AssemblyFor 20,000 and 30,000 BTU heatersIncludes three position rocker switchOn/off/auto settings3' long three prong plugStarting in 1984, Enerco’s Mr. Heater brand has delivered innovative technology and unmatched quality and service as America’s most popular brand of heaters. From its original tank tops to its patented buddy heaters, millions of consumers have enjoyed high quality comfortable heat. Mr. Heater now introduces the 20k Vent Free Blue Flame Propane Heater to the collection.Portable Heating SolutionThis 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.Wall or Floor MountThis 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.Mr. Heater Vent Free Blower Fan KitThis unit can only be added to the Mr. Heater 20,000 and 30,000 BTU heaters made in 2016 and current models. The electrical cord that is connected to the fan assembly can then be plugged into a wall outlet and the three position rocker switch for the fan can be set for either off all the time, the middle position, On all the time, the top position, and the Automatic, bottom position, which allows the fan to turn on and off with the heat from the Vent Free unit as it operates. This switch can be reached even when the heater is mounted to the wall.