What is a Whole House Fan?
A Whole house fan is a large exhaust fan mounted in the ceiling/attic to evacuate heat from the house and attic.
How does a Whole House Fan work?
Whole house fans are designed to replace the warm air in the house with cooler outside air. They are usually installed in the hallway, but will work in any room with an attic. To move air efficiently, some windows or doors will need to be open while it is running. The fan pulls cool air into the house, pulls the warm house air up into the attic and pushes the hot attic air outside through the attic vents. Occasionally, additional attic vents are necessary for the fan to operate properly.