Mr. Heater MH60QFAV 60,000 BTU Portable Propane Forced Air Heater QBT Technology - 50% Quieter than a standard propane heater 60,000 BTU Propane Forced-air Heater" Variable 30,000-60,000 BTU Output (Runs Up To 14 hrs on 20 lb. tank (low setting)) Heats Up To 1,500 Sq.Ft. Continuous ignition