Defining Return Air

Defining Return Air

 

The return air is the air that returns to the HVAC system from the area that is being cooled or heated. This air flows through return grilles and through the HVAC’s ductwork for filtering and recycling or removal from the building. In chilled beam HVAC systems, the return air could be existing warm air that flows from the room to an exchanger in the ceiling for cooling.

(Source: Building Science)

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