Up to 1500 watts and 5,120 BTUs of power effectively heat rooms up to 250 square feet Thermal chimney design and expanded radiant surface provides up to 50% more heat surface than standard radiator designs Three settings for power -- 1500W (maximum), 800W (medium), and 700W (minimum) -- let you control the heat output Adjustable thermostat and a 24-hour programmable timer deliver customisable comfort Anti-freeze setting turns the unit on automatically when the temperature dips below 44-degrees Fahrenheit High-quality metal construction with a patented steel assembly and a permanently sealed oil reservoir is durable and maintenance free Thermal shut-off prevents overheating for safety and peace of mind Efficient ECO function automatically adjusts heat and power settings to save energy and money