Pro-Temp PT-175T-KFA 175,000 BTU Kerosene/Diesel Forced Air Heater w/Thermostat, Red/Black VERSATILEgreat for construction sites, workshops, farms, or garages TOUGHsteel construction;Maximum Operating Hours:9.5 RELIABLEthermostat-controlled heating for up to 4300 square feet Unique air pressure gauge, easy-lift handles, fuel gauge, and 5-Point Safety System 1-year limited warranty 175,000 BTU Heat Output Heats up to 4,300 square feet Operates 9.5 hours on full 13-gallon tank Built-In Thermostat Digital temperature readout & led diagnostics