Are attic fans good or bad?

Under the right conditions, an attic fan offers effective attic ventilation during hot summer months and a longer life for roof shingles. However, proper organic attic ventilation is often a preferred alternative and may offer a more cost-effective ventilation solution.

The Wheaton Patch notes that electric attic fans often draw in dirty air, suck cold air from the home's interior, and contribute to higher electric bills. A home that has an adequate amount of soffit vents and proper roofing ventilation should thrive without an attic fan. This setup minimizes the potential risks and often higher utility costs associated with a fan.