We have found Attic fans or more effective than vents, especially when it comes to lowering and regulating scorching attic heat. Why? Because fans help to circulate the airflow, the temperature in the living room, kitchen, bedrooms, and kitchen are lowered; especially during summer months when heat temperatures are extreme. Attic fans can also help to keep moisture from soaking into the wood framing of your roof. Undetected moisture can cause mold which weakens the wood and slowly erodes insulation. An attic fan redirects moisture away from the attic space outside and prevents future damage.