Are Attic Fans Necessary With Central Air

Some homes cannot accommodate the amount of attic ventilation that the older traditional style whole house fans require.

Are attic fans necessary with central air.

The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation. If installed anyway they won t work properly. By installing more roof vents such as a ridge vent you increase the possibility that most attic air will come from outside says tim carter a residential contractor in cincinnati. There are two basic types of attic fans.

Building codes often require about 1 foot of attic ventilation for every 750 cfm airflow. During the summer an attic can be 40 to 50 hotter than the outside temperature which in turn heats up the house very quickly. If you have few vents in your attic most of the air will be drawn from inside the house. Now if you did have central air conditioning i would tell you not to install an attic fan and here s why.

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 also requires no assembly. Intake vents located at the lowest part of the roof under the eaves allow cool. The attic coffin you mention which is used to air seal and insulate pull down stairs scuttle hole or a whole house fan is good in theory but in practice is cumbersome to install.

Even though a manufactured cover costs more it is far easier to install. Powered attic ventilators are housed in the. 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. Oh an attic fan will do that.

A fan may actually suck air conditioned air from your home into the attic. Quietcool attic fans work almost everywhere almost anytime. Ventilation fans or powered attic ventilators are designed to cool the attic pushing out the hot attic air and rushing in a flow of cool outside air. With an attic fan you can cool the attic to the same temperature as it is outside greatly reducing the house from heating as quickly.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Because typically attic fans are so strong that not only do they take the hot air out of the attic but they reach down into your house and take the cool air out of the house as well.