Desa F66D is a portable heater, best suited for use in well-ventilated areas, that offers a clean and efficient way to heat spaces temporarily. It has a 63,000 BTU output rating, making it suitable for heating larger areas or for providing substantial warmth in smaller spaces. The heater operates on 115 volts and 60 cycles of power, and its grounded three-prong plug ensures safe operation. The fuel tank has a 4.5-gallon capacity and uses kerosene or No. 1 fuel oil, with an approximate consumption rate of 0.45 U.S. gallons per hour.