Are Attic Fans Necessary With Central Air

There are two basic types of attic fans.

Are attic fans necessary with central air. If you have few vents in your attic most of the air will be drawn from inside the house. 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. If installed anyway they won t work properly. Intake vents located at the lowest part of the roof under the eaves allow cool.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Rooftop fans and gable fans. Powered attic ventilators are housed in the. 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.

The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation. Even though a manufactured cover costs more it is far easier to install. Quietcool attic fans work almost everywhere almost anytime. Oh an attic fan will do that.

Building codes often require about 1 foot of attic ventilation for every 750 cfm airflow. A fan may actually suck air conditioned air from your home into the attic. 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 fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside.

It also requires no assembly. Some homes cannot accommodate the amount of attic ventilation that the older traditional style whole house fans require. 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. During the summer an attic can be 40 to 50 hotter than the outside temperature which in turn heats up the house very quickly.

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. 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.