Accommodating spaces up to 1,000 square feet, this 25,000-BTU LP-gas wall heater helps provide a cozy, warm living environment. The unit’s electronic piezo ignition system offers quick start-ups with one simple step (no matches, batteries, or other lighting sources required), and its top-mounted controls make it easy to adjust the heat level from low to high, depending on the amount of heat desired. Once started, the unit radiates instant infrared heat that directly heats objects in the room, which in turn warm the air. The unit runs with 99-percent efficiency, costing only pennies an hour. The unvented heater should be used as supplemental heat, in addition to a home’s primary heat source; however, if the power goes out or in an emergency situation, it can be safely used as a primary heat source. For peace of mind, the heater comes equipped with an array of safety features, including a “safe watch” pilot assembly, which will automatically shut off the flow of gas if the pilot becomes extinguished; a built-in oxygen-depletion sensor that extinguishes the flame if oxygen levels drop below A.N.S.I. standards; and a pressure regulator that maintains a steady gas flow for a safe, even burn. Wall-mounting brackets and detailed instructions come included for easy installation. The wall heater measures approximately 7 by 26-3/5 by 23 inches.