Product Type Direct-Fired Portable Oil Kerosene Radiant Torpedo Heaters Portability Handheld Portable Heating Capacity Output 70 000 BtuH Heating Area 1 750 sq ft Tank Capacity 4 gal Hours on One Filling 8 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 No Built-In Air Pressure Gauge Included No