This heavy-duty patio heater offers an impressive heat output of 46,000 BTUs. Even more, the unit heats a wide area with a range of up to 18 feet in diameter. A nice alternative to a fire pit, the gas patio heater delivers quiet, soothing, consistent heat--with no smoke or open flames to worry about. Does not include propane tank. (1) 20 lb. cylinder is required and will last for 10+ hours.