This Radiant 125,000 BTU Portable Liquid Propane Heater requires no electricity and provides 360 degrees of heat, all while operating much quieter than forced air heaters of the same size. With factory installed features, like a tip-over safety switch and a thermoelectric safety valve, the only thing you need to make this heater the most useful tool you own is a 100lb propane tank. Just hook the tank up with the supplied 20ft hose and regulator, then enjoy the quiet warmth of the Heatstar HS125LP.