Reflective radiant heat with the warmth of the sun. That is the Mr. Heater portable radiant heater in a nutshell. This radiant 35,000 BTU portable Liquid Propane Heater requires no electricity and is whisper-quiet. 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 20 lb propane tank. Just hook the tank up to the supplied 10 ft hose and regulator, then enjoy the quiet warmth of the Heatstar MH35LP.