Do Attic Fans Help Cool A House

The louvers close when the fan is not operating.

Do attic fans help cool a house.

Whole house fans work on the principle of removing the hot and humid air out of the house. Whole house cooling using a whole house fan can substitute for an air conditioner most of the year in most climates. They can provide a cooling effect that reduces temperature significantly in your 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.

Using the simple physics principle of air circulation it can draw in cool air while letting out the warm air. Adding an attic fan can improve the airflow in your attic to keep it cool. Attic fans push out the hot air and pull in the cool air from the vents installed on your roof. This whole house fan is installed on the ceiling between the attic and living space.

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. Vents do provide some passive cooling but not enough to truly reduce your indoor temperatures. When an attic fan is operating during the hottest summer days the temperature in your attic can drop by as much as 50 degrees. Photo courtesy of allison casey.

Yes attic fans can make a difference. It will offer you more benefits that include. It helps to cool your home temperatures and the attic by approximately 30 degrees. Do attic fans really help to cool a room.

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. If the attic fan keeps the house cool enough so that the owners leave the ac off there is almost certainly an energy benefit. Whole house fans combined with ceiling fans and other circulating fans provide acceptable summer comfort for many families even in hot weather.