Attic Fan Are They Worth It

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.

Attic fan are they 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. The fan blades spin but they don t lower the attic. Attic ventilation fans could be effective if your home has. 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.

Instead of installing a fan just make sure your attic is well ventilated. However there are certain circumstances where they can prove useful. Attic insulation that is less than r 19. Solar attic fans are they worth it the short answer is it depends.

It may be starting to sound like attic ventilation fans aren t worth the hassle and could cause more problems than they solve. Often the property s hvac system duct work is routed through attic spaces which even though they are insulated to protect the house below will still get very hot when in the direct sun or the heat of high summer. Of course if the attic fan isn t working correctly and is running all year long that would be a significant problem. This is a solar panel supplying free electricity to the attic fan under the silver dome on the rear roof.

If the attic fan keeps the house cool enough so that the owners leave the ac off there is almost certainly an energy benefit.