Do Attic Fans Cool House

The whole house fan pulls air in from open windows and exhausts it through the attic and roof.

Do attic fans cool house.

Unlike a ventilation fan a whole house fan an attic mounted fan that exhausts air from a home at night is designed to cool a house that is to lower the indoor temperature. It is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with outdoor air. 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. It provides good attic ventilation in addition to whole house cooling.

Whole house fans should provide houses with 3 to 6 air changes per hour varies with climate floor plan etc check with a professional to determine what is appropriate for your home. Do not use mechanical means electric attic fans. 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. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed.

To ensure that the attic fan is working properly you need to make sure that your attic is sealed up tight where it touches the ceiling of the top floor. Intake vents located at the lowest part of the roof under. They can provide a cooling effect that reduces temperature significantly in your house. Using the simple physics principle of air circulation it can draw in cool air while letting out the warm air.

It will offer you more benefits that include. When an attic fan is operating during the hottest summer days the temperature in your attic can drop by as much as 50 degrees. Yes attic fans can make a difference. Adding an attic fan can improve the airflow in your attic to keep it cool.

Once the house has cooled the fan can be turned off and the windows closed. Generally speaking they can cool down a house in less than an hour. Vents do provide some passive cooling but not enough to truly reduce your indoor temperatures. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Note that they do not push air in the house but draw fresh air into the attic enabling your house to cool almost instantly. Attic fans are critical because they are designed to cool off the attic providing relief to the unbearable temperatures of your home. The windows remain closed until the next evening to.