Product Type Direct-Fired Portable Oil Kerosene Torpedo Heaters Portability Wheeled Mounted Heating Capacity Output 170 000 BtuH Heating Area 4 000 sq ft Tank Capacity 13 gal Hours on One Filling 13 hr Ignition Type Direct Spark Ignition Power Source Electric On/Off Switch Included Yes Fuel Gauge Included Yes Power Failure Indicator Included Yes Digital Temperature Readout Included Yes LED Diagnostics Included Yes Built-In Air Pressure Gauge Included Yes