ProCom's vent-free gas space heaters make supplemental heating fast and easy. Just push a button for easy ignition, stand back and enjoy a great source of dependable, affordable heat. ProCom’s Infrared vent-free gas space heaters work just like the sun's radiant heat, warming objects and people in the room first. These gas space heaters operate 99.9% efficient and allow you to enjoy continuous heat even during a power failure, these heaters operate without the need of electricity. These gas space heaters have the added benefit of Dual Fuel Technology. This patented technology provides each appliance with 2 fuel options. Use either Natural Gas or Liquid Propane with no conversion kits required.