Cedar Ridge Recon Dual Fuel Infrared Heater - 3 Plaque, Model# MD3TPU 20,000 Maximum BTU When Using Natural Gas - 16,000 Maximum BTU When Using Propane Gas Patented DUAL FUEL TECHNOLOGY - 1 Unit operates off Natural Gas or Liquid Propane No electricity required to operate heater! Thermostat Control  The control automatically cycles the burner on and off to maintain a desired room temperature. Wall mounting bracket included