Desa Tech C50D is a portable heater that provides temporary heat wherever you need it, with a heating capacity of 50,000 BTU per hour. It is powered by electricity and uses kerosene or No. 1 fuel oil. The heater features a safety control system that shuts it down if it fails to ignite or if the flame goes out during operation. Additionally, a thermostat accessory can be purchased to regulate the temperature between 30 and 90 degrees Fahrenheit.