The Mr. Heater High-Intensity Radiant OverheadHS8060PPLP Liquid Propane Power Pile heater directs radiant heat to floor-level objects, which in turn, heat surrounding air to the desired temperature. Personnel and objects at floor level enjoy instant, cost-saving comfort. Ideal for use in drafty or windy areas like a loading dock or mechanic bays where doors are open during Winter conditions. At 99.9% efficiency, it transfers almost all of the fuel it burns directly into clean safe radiant heat. It is equipped with a power pile thermocouple ignition with a manually lit pilot, so no electricity is required. This heater also has a safety shut-off on the pilot and burner and ships with a thermostat. Mr. Heater's high-intensity heaters are protected by a 10-year, pro-rated burner assembly warranty and a limited 1-year gas control warranty. Consult the user manual for installation instructions and for clearance to combustible guidance.