electric efficient heaters is the most popular and recognized use of propane gas. Residential and commercial heaters using propane consist of both central heating furnaces and space heaters, also called room heaters. The requirements for electric room heater installation and usage are for the safety and well being of consumers as well as comfort. As propane is used in heating appliances, care must be taken to ensure consumer and family safety is a priority above all else including comfort. Incorrect use of heating appliances can result in fire, damage and bodily harm. Even the most carefully laid out and legally installed propane gas system is useless if heaters are improperly placed, adjusted or used.