Big heat right out of the box. The Heatstar 80,000 BTU Liquid Propane Convection heater packs a big punch in a small package. The HS80CVX utilizes the natural act of warm air rising to quickly heat up to 1,900 square feet. Equipped with a thermo-electric safety valve to shut the gas flow off if the flame ever goes out. Just hook-up the supplied 20ft propane hose and regulator assembly to a 20lb propane tank, then easily light the heater utilizing the factory installed Piezo igniter and enjoy the comforts of a toasty warm jobsite with the HS80CVX. 30,000 - 80,000 BTU per hour. Clean burning. For use with propane gas. No electricity required. Operates up to 14 hours on a 20 lb. propane tank. Quiet and odorless. Standing pilot for increased safety. CSA Certified.