An attic fan can also keep the roofing material on your home much cooler. It’s a proven fact that heat from the inside is just as devastating as hot temperatures on the outside. Both of these scenarios can shorten the life span of roofing materials, especially shingles. Hot temperatures in the attic can also damage the insulation and wood; heat will cause wood to expand and this often means replacement of rafters and other structural materials. If your attic is prone to dampness, the heat can cause mildew and mold to grow; a definite problem for the entire family.
For those that are looking into installing an attic fan; there are several types, there’s the solar powered and the electrical powered. The solar powered runs off of solar energy and is generally very cost effective over time.