Attic Fans: The Downside of Sucking Hot Air

In theory, attic fans are installed to reduce cooling costs and to lower attic temperatures. However, in practice they lower attic temperatures but cause a plethora of other problems. But what exactly are attic fans? Attic fans are installed in the attic and used to expel hot air (you can learn morehere).  Attic fans can be installed in the roof deck, gable ends, or in the ceiling deck of the building. For this particular blog we are going to emphasize two different applications: attic fans and whole house fans. Attic fans differ from whole house fans because they are installed in the roof deck or gable ends, while whole house fans are installed in the ceiling deck.