ProCom dual fuel vent-free Blue Flame heater is built for durability and efficiency to keep homes warm for many cold seasons to come. This compact but solid heater provides a reliable source of heat. It runs at 10,000 maximum BTU which heats up to 500 square feet of living space. No electricity is required which is perfect for power outages. Dual fuel technology has one unit that operates on either natural gas or propane gas. This versatile gas space heater has been designed with a slim and modernized profile. Features five heat settings with micro heat adjustments between each setting, pushbutton Piezo ignition system, and ODS (Oxygen Depletion Sensor) for safety.