[cherylncliff]

We had a home energy audit by SECO. The inspector said that attic fans can help lower the attic temperature but from a $ savings perspective, they are not worth the investment. That is, it does not save you much on your electric bill nor does it prolong the life of the roof. His recommendation was to prop the access door to the attic open and leave the garage door open a few inches and let the natural thermal circulation do its job.

I can't give you any facts but we chose not to get the fans.