Condenser Coil / Outdoor Coil
In an air conditioner, the coil dissipates heat from the refrigerant, changing the refrigerant from vapor to liquid. In a heat pump system, the coil absorbs heat from the outdoors.
Found in ductwork, this movable plate opens and closes to control airflow. Dampers can be used to balance airflow in a duct system. They are also used in zoning to regulate airflow to certain rooms.
A pipe or conduit through which air is delivered. Ducts are typically made of metal, fiberboard or a flexible material. In a home comfort system, the size and application of ductwork is critical to performance and is as important as the equipment.
Evaporator Coil or Indoor Coil
Part of an indoor air unit, by drawing out heat and moisture, it functions with the air conditioner or heat pump outdoors to cool and condition the indoor air that flows over it.
Gas Furnace Heat Exchanger
Located in the furnace, the heat exchanger transfers heat to the surrounding air, which is then pumped throughout your home.
Heating Seasonal Performance Factor. This rating is used in measuring the heating efficiency of a heat pump. The higher the number, the more efficient the heat pump system.
A heating and cooling system contained in the outdoor unit. A package unit is typically installed either beside or on top of the home, or placed in the attic.