HeathRite Vent-Free Radiant Heater Natural Gas 18000 BTU, Thermostatic Control, HR18TN

99.9% efficiency – turns more gas into heatAvailable in LP or Natural gasPushbutton piezo ignition and standing pilotHeats even when electric power failsOxygen Depletion Sensor shuts off heater before oxygen drops to unsafe levelsEvery heater is test-fired at the factory to check Oxygen Depletion SensorWall-mount or floor standThree-year limited warranty on parts and laborImported for Empire from China