Glossary of Heating, Ventilation and Air Conditioning Terms

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
EER
Energy Efficiency Ratings (EER) measure the efficiency with which a product uses energy to function. It is calcuated by dividing a product's BTU output by its wattage.
Electric Heat

The process of converting electrical energy, using resistance, into heat.


Electronic Air Cleaner

An electronic device that filters out large particles and contaminants in indoor air.  It then electronically pulls out tiny particles that have been magnetized, such as viruses and bacteria, drawing them to a collector plate.


Evaporator Coil

Part of a split-system air conditioner or heat pump located indoors. The evaporator coil cools and dehumidifies the air by converting liquid refrigerant into a gas, which absorbs the heat from the air. The warmed refrigerant is then carried through a tube to the outdoor unit (condenser coil). Also referred to as an indoor coil.


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