Are Attic Fans Necessary With Central Air

Rooftop fans and gable fans.

Are attic fans necessary with central air.

Intake vents located at the lowest part of the roof under the eaves allow cool. If installed anyway they won t work properly. Three years ago i replaced my hvac system and updated my central air. Some homes cannot accommodate the amount of attic ventilation that the older traditional style whole house fans require.

But you can install attic fans which will continuously replace the stagnant air with fresh outdoor air preventing your attic from turning into an oven. I am thinking that in addition to cooling the attic the attic fan. Oh an attic fan will do that. Yes an attic fan is definitely strong enough to do that because there are hundreds of holes in the structure of the house that allow it to do that.

The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation. Building codes often require about 1 foot of attic ventilation for every 750 cfm airflow. This pressure balance improvement and the cooling provided by the air flow are most significant in the case of a leaky ceiling. I have large attic with ridge vents and screened vents at either end of the attic to maintain air flow.

A friend of mine says attic fans are helpful only when there is no a c in a home and that all it will do it cool the attic. I have a shop in my attic for some of my hobbies and it get s very hot in the summer. Most homes already have some passive attic venting built in. 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.

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. Also note that when the ac is on stack effect causes a house to pull air from the attic. How does an attic fan work. Now if you did have central air conditioning i would tell you not to install an attic fan and here s why.

If i have central air do i need to replace the broken attic fan. 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. There are two basic types of attic fans. Attic ventilation fans offer mechanical ventilation using a fan to draw in cool outside air and force out warm moist air.

Hello i have an attic fan that does not work anymore. Exhausting moderate amounts of attic air as solar fans do can counteract this reducing infiltration my calculations show it to be about right for a vented attic but either do the calculations or measure the pressures. Can i put a small swamp cooler or ventless a c unit up there to cool it only to use while i am in my shop maybe an hour or two a couple times a week. Air is drawn in through the attic fan and air is expelled through the roof vent system to keep your attic cooler and drier preventing ice and moisture issues throughout the winter.