Understanding HVAC Terms

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heating, ventilation and air conditioning

Understanding HVAC Terms

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Your HVAC unit has quit working! As you call to find someone to check it out, all of these HVAC terms are being said and it can be quite confusing. We’re going to define a few for you to help you concerning your future Heating, Ventilation and Air Conditioning questions:

What Does HVAC Mean?

Short answer: Heating, Ventilation and Air Conditioning

HVAC Unit:
This is the machine that heats and cools your home or work space.
Heating, ventilation and air conditioning

A mechanical device in the HVAC unit that compresses gas used by the air conditioner to compress freon.

Evaporator Coils:
The part of the HVAC unit where liquid refrigerant that the compressor moves into it turns to gas. As the air that blows from the blower fan moves over the coils the cold refrigerant removes the heat from the space’s air.

A chemical substance that releases heat as it expands or evaporates, creating a cooling effect.

A type of refrigerant used in the HVAC unit.

Blower Fan:
Also called the centrifugal or squirrel cage fan, is used commonly for exhaust or in HVAC systems.

Don’t let a few confusing words stop you from understanding what is going on with your HVAC unit. And if there is ever a question on anything concerning HVAC service, you can always call Cagle Service at 731-300-1030, and we can answer all of the questions that you have!

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