This topic covers information related to electric resistance furnaces installed during construction. Electric resistance furnaces convert electricity into heat through an electrical resistor. Electrical resistance heaters can be either radiative, convection, forced convection or radiant.

This topic covers information related to fuel fired furnaces installed during construction. Fuel fired furnaces heat air moving past combustion created by an ignition and fuel source. The major components of a fuel fired furnace include burners, a heat exchanger, draft inducer, vent, blower, control and safety devices. Fuel sources for fuel fired furnaces include; natural gas, liquefied petroleum gas, oil, coal or wood.

This topic covers information related to fuel fired heaters installed during construction. Fuel fired heaters are self contained, automated heaters that serve areas where a central furnace does not exist.

This topic covers information related to solar energy heating equipment installed during construction. Solar energy heating utilizes equipment to collect and convert radiant light and heat from the sun into usable heat and energy. Solar heating equipment is powered by solar energy and consists of solar collectors, pumps, fans and ducts for distribution of warmed air.

This topic covers information related to heat exchangers installed as part of HVAC systems during construction. Heat exchangers are used to transfer heat from one medium to another. Media may include steam, air, water or other liquid.