Inadequate ventilation can lead to a buildup of heat and moisture in your attic. This can lead to higher cooling costs and take a toll on your home’s framing, insulation and roofing materials. AtticFiveStars Construction Installation either an attic ventilation fan or a whole house fan will help protect the integrity of your home by reducing temperatures and humidity levels in your attic space by pushing hot air out of your home while drawing cool air into your attic.