The Mr. Heater 30,000 BTU Vent Free Radiant Propane 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. Multiple burner tiles utilize radiant heat warming your space with the power of the sun. With a factory standard Oxygen Depletion Sensor (ODS), rest assured this heater will provide you with years of comfortable and safe heat. Excellent Solution: Mr. Heater 30,000 BTU vent free radiant propane heater is the perfect supplemental heating solution even on the coldest days Thermostat: This heater is conveniently equipped with a thermostat for superior control of the temperature in your space Versatility: This unit can be permanently mounted to the wall or securely fastened to the floor with included mounting brackets and fasteners Durability: Multiple burner tiles utilize radiant heat warming your space with the power of the sun. With a factory standard Oxygen Depletion Sensor (ODS), rest assured this heater will provide you with years of comfortable and safe heat Application: It is for use with liquid propane.