The uses of propane gas are too many to list here. It is used for cooking on grills and stoves, for heating homes, livestock facilities, in grain dryers, and other heat-producing appliances. It is used in heaters in construction sites. It is also used for conventional stationary refrigeration and air conditioning systems. Increasingly, propane is used for vehicle fuel because it is cleaner and also cost less. It is also used in manufacturing aerosol sprays and air fresheners, and even in the semiconductor industry.