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
Damper
A type of "valve" used in duct work that opens or closes to control airflow. Used in zoning to control the amount of warm or cool air entering certain areas of your home.
Dehumidification

The reduction of water vaport by cooling the air below the dew point,as well as the removal of water vapor from the air by chemical means, refrigeration, etc.


Delta T

A term indicating a temperature relationship between two temperatures or temperature variation between two points.


Drip Pan

A Pan shaped to collect moisture condensing on an evaportator coil in an air conditioning system.


Dry Bulb Temperature

Temperature read with an ordinary thermometer.


Ductwork

Hollow pipes used to transfer air from the Air Handler to the air vents throughout your home. Ductwork is one of the most important components of a home heating and cooling system.


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