Attic Ventilators Work

Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside.

Attic ventilators work. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If a cloud blocks the sunlight the fans slow or stop. For the attic fans to work at peak efficiency they need to be on a south facing roof slope if you live in the northern hemisphere. It allows hot air to escape in the summer and can also help reduce the chances of ice damage in the winter by allowing a natural flow of outdoor air to ventilate the attic.

This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner. Of course you try to make the attic scuttle hole use air tight trim on your ceiling cans but it would be foolish to ignore the benefits of a reasonably powered attic fan working in connection with adequate soffit venting. Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh. Ventilation helps maintain a healthy attic space both for your roof and for your family.