Accommodating spaces up to 1, 000 square feet, the Sure Heat 30,000 British Thermal Units Blue Flame Wall Heater helps provide a cozy, warm living space for you and your family. The perfect addition to newer homes with tight insulation, the Blue Flame's electronic Piezo ignition system offers quick start-ups with one simple step; no matches, batteries or other lighting sources required. Once lit, the heater radiates a convection heat which warms the air in the room first, then the objects in the room. This unit runs with 99.9-Percent efficiency on your homes Liquid Propane fuel supply; costing only pennies an hour. The included flexible connection tube allows for easy connectivity with minimal adjustments. The built-in thermostat is another ease of use feature. When the room exceeds the set temperature, the burner and blower will shut off; they will cycle back on when the room drops below the set temperature-no need for constant adjustments. Under normal circumstances, this unvented heater should be used as a supplemental heat source. However, if the power goes out or in an emergency situation, The Blue Flame can be safely used as a primary heat source. This unit is OMNI safety approved and comes with a built-in oxygen-depletion sensor that extinguishes the flame if oxygen levels drop below A.N.S.I. standards. Both floor and wall-mounting brackets, as well as detailed instructions, come included for easy installation in your space. .