Requirements for Propane Furnaces in Basements

Propane Furnaces

• As with most furnaces, propane furnaces ignite a pilot light inside the main access panel on the furnace, pull air into the unit, heat the air and send the air through the air ducts in the home. When the air is heated through combustion, the gases are removed through an exhaust ventilation system. In addition, propane furnaces can also be part of an air conditioning system. All of this means that potentially dangerous flue gases must be properly ventilated at all times to avoid a possibly dangerous health and safety situation.

Code Requirements

• The requirements for running a propane furnace in a basement vary from location to location. Some areas prohibit propane furnaces in basements because propane is a heavier gas and may settle in the basement. Other areas have strict requirements about the space in which the furnace is installed, such as the furnace must be located at least 6 inches above grade with a working space that is at least 30 inches in height and 12 inches on the side. Contact your local authorities or a qualified contractor for information about your area requirements.

Propane Requirements

• Again, the specific requirements for the use of propane with a basement furnace will vary according to location. This includes the specifications of the gas line hookup, which is usually required to be a black iron gas line with a maximum of 2 inches in length and a minimum height of 18 inches above the final grade. Copper lines cannot be used and the gas connection can’t be within 3 feet of a venting window or door. In addition, the gas connection must be placed at least 5 feet away from the propane cylinder ignition source. Contact a local authority or contractor for specifications in your area.

Proper Function

• For a propane furnace to operate correctly in a basement, certain elements must be used in accordance with each other. This includes clean air filters, open air registers, a blue pilot light flame (not orange or yellow in color) and a clear space around the propane furnace. Check with your installer or contractor for more information.