Glossary of Applied Air HVAC Terminology

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
Fahrenheit Scale
The temperature scale that places the boiling point of water at 212°F and the freezing point at 32°F.
Fan
A device that produces a pressure difference in air to move it.
Fan Cycling
The use of a pressure control to turn a condenser fan on and off to maintain a correct pressure within the system.
Fan Laws
A family of mathematical relationships that allows the calculation of new operating characteristics from known system conditions
Filter
A device for removing dust particles from air or unwanted elements from liquids.
Flow Coefficient
A dimensionless parameter relation air velocity to fan tip velocity. It's used to determine approximate fan width for centrifugal impellers.