Desa Reddy Heater 155,000 BTU Kerosene Forced-Air Heater #R155D Heats up to 3,600 Sq. Ft. 12-hour run time on full 13.5 gallon tank Quickly heats 50' x 72' x 8' area Multi-fuel use kerosene, diesel, fuel oil, jet fuel Exclusive HIS Smart Start Technology, Dependable cold weather start to -30 degrees F with Kerosene