Mr.Heater 35,000 BTU Liquid Propane Portable Radiant Heater MH35LP35,000 BTU Mr. Heater Liquid Propane Portable Radiant Heater MH35LP Product Details 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