Product Type Direct-Fired Portable Oil Kerosene Torpedo Heaters Portability Wheeled Mounted Heating Capacity Output 180 000 BtuH Heating Area 4 200 sq ft Tank Capacity 13 gal Hours on One Filling 10 hr Ignition Type Interrupted Spark Ignition Power Source Electric On/Off Switch Included Yes Fuel Gauge Included Yes Power Failure Indicator Included Yes Digital Temperature Readout Included No LED Diagnostics Included Yes Built-In Air Pressure Gauge Included Yes