Product details:

Blue Flame heaters gently warm the air, causing it to rise and create a natural circulation. Operating at 99.9% efficiency, these heaters will keep on heating even without electrical power. Completely safe, the Oxygen Depletion Sensor shuts off the heater before the oxygen drops to an unsafe level. Pushbutton piezo-ignition and standing pilot Heats even when electric power fails Every heater is test-fired at the factory to check ODS Wall mount is standard. Optional floor stand is available Optional blower available separately 99.9% AFUE Efficiency RatingProfessional installation by a certified gas technician is required. Models using Propane Gas must be operated with a 100 lb or larger tank and an external regulator with an output of 11 - 14 WC must be. Repairs must be done by a qualified service contractor. Use only in compliance with local codes. The HBW30TL is a vent free blue flame heater in a white finish, with thermostat control in Liquid Propane. It is also available for use with Natural Gas (HBW30TN).