For use with propane gas. Heavy-duty design built for the job site. QBT technology - 50% quieter than a standard propane heater. Comes with a standard 10 Ft. hose and regulator. Equipped with factory installed high limit switches and thermoelectric safety valves. Piezo ignition. High Limit Safety Shut-off. Plug heater into a 110V outlet, hook up the hose and regulator to a 20 Lb. propane tank or larger. Cylinders sold separately. Check state and local codes for permitted uses.