exhaust fan

In by Jackie Dunn

A fan that extracts air or excess heat from the interior of a home.

exhaust fan (Wikipedia)
A typical whole-house fan, with louvers closed when not operating
Video of a whole-house fan in operation.

A whole house fan is a type of fan, or exhaust system commonly venting into a building's attic, designed to circulate air in a home or building. It is sometimes confused with a powered attic ventilator, which exhausts hot air from the attic to the outside through an opening in the roof or gable at a low velocity.

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