Provide instant heating for your home or office by installing this Mr. Heater 20,000 BTU Vent-Free Blue Flame Gas Heater. This item uses natural gas and will make a practical supplement heat source for those extra cold days. This 20,000 BTU gas heater is conveniently equipped with a thermostat to achieve superior control of the temperature. With the included battery-powered electronic ignition, starting it is a breeze. This vent-free gas heater can be permanently mounted to the wall or securely fastened to the floor using the included mounting brackets and fasteners. A clean-burning blue frame tube burner uses the natural convection of the burn to circulate warm comfortable air. With a factory-standard Oxygen Depletion Sensor, this model will provide years of safe heating.

Mr. Heater 20,000 BTU Vent-Free Blue Flame Gas Heater:20,000 BTU gas heater (per hour)For use with Natural GasVent-free gas heater heats up to 500 sq ftBlue flame burner for even convection heatThermostat for automatic temperature controlAutomatic low-oxygen shut-off system (ODS)Battery-powered electronic ignition for easy start-up