No more worrying about overheating or starting a fire, a ceramic thermal cut-off mechanism shuts the heater down if it's accidentally tipped over or covered with curtains, blankets etc. A dual heat-flow setting makes it easy to regulate. Choose the "hi" setting for 1500 watts or the "lo" setting for 750 watts. And, an adjustable thermostat helps fine-tune temperatures and conserve energy. When winter is over, the fan operates without heat for summer cooling. A built-in handle and wide solid base ensures optimal stability and convenient portability. And, this quiet operator is perfect for any room in the house. An anti-freeze setting automatically turns on the heater when the temperature reaches 44 degrees Fahrenheit.