Are Attic Fans Worth It

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Science Based Info On Why Powered Attic Fans Including Solar Attic Fans Are Generally A Bad Idea Solar Attic Vent Attic Fans Solar Attic Fan

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Should We Consider A Ventilation System For Attic Such As This Solar Star Solar Powered Attic Ventilation Sy Attic Ventilation Solar Attic Fan Attic Renovation

These fans are designed to remove excess heat from your attic which in theory is supposed to lessen the load on the air conditioning in your home.

Are attic fans worth it.

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. Attic insulation that is less than r 19. An attic fan is installed on the slanted side of your roof or on one of the gable sides of your attic. Find out whether it is economical to run an attic fan.

Attic fans exhaust hot air from your attic to the outside. Of course if the attic fan isn t working correctly and is running all year long that would be a significant problem. As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in. If the attic fan increases the comfort level of the house it may be worth it.

If there isn t enough venting in the attic for the attic fan to pull air from it will start pulling air from the home s interior through the wall cavities and drywall ceilings. Attic ventilation fans could be effective if your home has. How an attic fan works. Their energy efficiency is already extraordinary.

Much of that heat then conducts downward and finds its way into the house. The fan blades spin but they don t lower the attic. The attic fans needs to have a minimum amount of makeup air or intake air which is the vent area that the attic fan pulls air from. Is a solar attic fan worth the cost.

However there are certain circumstances where they can prove useful. 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. It may be starting to sound like attic ventilation fans aren t worth the hassle and could cause more problems than they solve. Solar attic fans are not needed in brand new construction homes.

So is it truly worth it to add a solar attic fan on an older home. Instead of installing a fan just make sure your attic is well ventilated. Or is it better to abide by proven methods of insulating a home and increasing attic ventilation through soffits ridge vents or offset ridge vents. Do not use mechanical means electric attic fans.

Attic fans are not recommended if you have central air conditioning because when you turn the fan on in the summer it depressurizes the attic but also reaches down into your house and starts drawing off air conditioned air effectively driving up your cooling costs.

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