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. 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. It is designed to lower the temperature of an attic by exhausting air from the attic and replacing attic air with outdoor air. 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. 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.

A powered attic ventilator has a different purpose. Vents do provide some passive cooling but not enough to truly reduce your indoor temperatures. They can provide a cooling effect that reduces temperature significantly in your house. Attic fans push out the hot air and pull in the cool air from the vents installed on your roof.

Generally speaking they can cool down a house in less than an hour. 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. Note that they do not push air in the house but draw fresh air into the attic enabling your house to cool almost instantly. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Intake vents located at the lowest part of the roof under. When an attic fan is operating during the hottest summer days the temperature in your attic can drop by as much as 50 degrees. The windows remain closed until the next evening to. Attic fans are critical because they are designed to cool off the attic providing relief to the unbearable temperatures of your home.

Using the simple physics principle of air circulation it can draw in cool air while letting out the warm air. 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. It provides good attic ventilation in addition to whole house cooling. Do not use mechanical means electric attic fans.

Once the house has cooled the fan can be turned off and the windows closed. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. 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.