Pro-Temp PT-70T-KFA 70,000 BTU Forced Air Kerosene Heater, Red/Black 70000 btu heat output Heating Area 1875 sq. ft. Operates 9-hour on full 5-gallon tank Built-in thermostat Power on/off switch 70,000 BTU Heat Output Heats up to 1,700 square feet Operates 9 hours on full 5-gallon tank Built-In Thermostat Power on/off switch