Are Attic Fans Good Or Bad

The downside of attic ventilation fans.

Are attic fans good or bad.

Many attics are exposed to high humidity levels in both the winter and summer months and having a good attic fan helps ease these worries. This backdraft can bring dangerous and toxic fumes into your home like carbon monoxide an odorless and deadly gas. Attic fans are necessary for keeping your home cooled during summer months and also to help prevent the growth of mold and mildew. Trying to solve the heat gain problem in your attic by using a fan is like lying out at the beach with a fan blowing over you and thinking you re not going to get a sunburn.

Attic fans can create a negative pressure condition in your home causing vented appliances to backdraft. Attic ventilation strategies are attic fans a good idea. Attic fans reduce heat dramatically. Using a fan to blow hot air out of the attic doesn t address the radiant heat flow from the roof to the attic floor.

Much of that heat then conducts downward and finds its way into the house. More attic ventilation is good. If you have an attic then you already know the answer to this question. Attic mounted fans are quieter because they re farther away from the living area.

There are many benefits of attic fans. Even though a manufactured cover costs more it is far easier to install. Every homeowner has been told at some point or another about how important ventilation is to your attic especially by roofing companies and those in the business of selling attic fans. Just like properly sizing your furnace and air conditioning unit you want precisely the right amount of attic ventilation for your home.

The attic coffin you mention which is used to air seal and insulate pull down stairs scuttle hole or a whole house fan is good in theory but in practice is cumbersome to install. However the utility of attic ventilation fans is actually quite a controversial topic. With an attic fan many attics have a temperature that is the same as the outside air or just a few degrees warmer. The point of having an attic fan is to lessen the load on your ac system saving you money.

It also requires no assembly. Insufficient ventilation can lead to moisture problems during the winter and decreased energy efficiency during the summer but too much ventilation can be just as bad if not worse. The temperature in attics without attic fans can climb to as high as 150 degrees f. A well ventilated attic helps to avoid problems with moisture and heat buildup.

Ventilation fans ventilation fans or powered attic ventilators are designed to cool the attic pushing out the hot attic air and rushing in a flow of cool outside air.