This Dyna-Glo™ DELUX 400,000 BTU portable multi-fuel forced air heater provides immediate relief from cold weather working conditions, heating areas of up to 8,500 square feet. Ideal for industrial and commercial applications, this multi-fuel heater requires little assembly and is 98% fuel efficient. The unit operates on 1 K kerosene, # 1 diesel, and # 1 fuel oil. Includes digital self-diagnostics, thermostat, LED readout, secondary power outlet, and cord wrap. Features: 400,000 BTUs Comfort Control Thermostat Built in Digital Display Secondary Power Outlet Digital Self-Diagnostics Front & Rear Lift Handles & Cord Wrap Flameout Sensor Sturdy, Rugged Construction Run Time Fuel Gauge Flameout Sensor Front and Rear Lift Handles Convenient Cord Wrap Fuel Capacity: 29 Gallons Total Heating Capacity: 9.5 Hours Limited warranty of 1 year.