Friday, September 28, 2007

Why Use an Attic Fan?

An attic fan is a simple and inexpensive method of cooling a house. The fan draws cool outdoor air inside through open windows and exhausts hot indoor air through the attic to the outside. Running an attic exhaust fan whenever outdoor temperatures are lower than indoor temperatures will cool a house.

In summer, the air inside a home is heated during the hot part of the day. During the
morning, late evening, and night, the outside air is often cooler and can be used to replace the inside air. Operating the attic exhaust fan at these times will cool interior materials. As daytime temperatures rise, the attic exhaust fan can be turned off. The cool materials (along with ceiling or circulating fans, which create an additional cooling effect) will help keep the interior more comfortable.

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