Big heat right out of the box. The Mr. Heater 200,000 Btu liquid propane convection heater packs a big punch in a small package. The MH200CVX utilizes the natural act of warm air rising to quickly heat up to 5000 sq-ft. Equipped with a thermo-electric safety valve to shut the gas flow off if the flame ever goes out. Just hook-up the supplied 10 ft propane hose and regulator assembly to a 20 lb propane tank, then easily light the heater utilizing the factory installed Piezo igniter and enjoy the comforts of a toasty warm jobsite with the MH200CVX.