Dyna-Glo 30,000 BTU Natural Gas Infrared Vent Free Thermostatic Wall HeaterDyna-Glo wall heaters are the ideal choice for safe, indoor supplemental heating. This state-of-the-art vent free technology does not require a flue or chimney. These heaters are great for use in your home, cabin, or garage. Since these heaters do not require electricity to operate, they make an excellent choice for everyday heating, and emergency situations when the power goes out. Using infrared heating technology, objects are warmed first similar to how the sun heats & feels. This Infrared Wall Heaters burn with 99.9% efficiency, and operates on Natural Gas only. Not for sale in California or Canada. Check your local regulations on installation restrictions and requirements.Natural Gas Ready (Fuel conversion not permitted)Infrared Technology works by radiating heat to warm objects first Similar to the sunUp to 30,000 BTUs/hr heats up to 1,000 sq. ft.Thermostat control knob automatically maintains your ideal heat levelNo electricity required allows for reliable back-up heating incase of an emergency situationDEPENDABLE- Ideal for emergency or daily supplemental useECONOMICAL- Cut heating bills by warming only occupied areasCOMFORT- Heater automatically adjusts to your desired temperature; just like your home thermostatSAFE- Built-in oxygen depletion sensor (ODS) immediately shuts down the heater if carbon monoxide or lack of oxygen is detectedCONVENIENT- One continuous press of the battery assisted igniter makes ignition quick & effortlessVERSATILE- Includes all necessary hardware & bracket for wall mountingUPGRADEABLE- Separately sold optional base legs (WBL100) provide the alternative of floor mounting. Separately sold optional Wall Heater Fan (WHF100) distributes heat in a quiet, yet powerful way.