Do whole house attic fans work?

How Whole House Fans Work. The whole house fan pulls air in from open windows and exhausts it through the attic and roof. It provides good attic ventilation in addition to whole house cooling. Whole house fans should provide houses with 3 to 6 air changes per hour (varies with climate, floor plan, etc.

What is better an attic fan or whole house fan?

To ventilate the attic, the attic fan is a better choice since it actively moves air out of the attic. In fact, the whole house fan only deposits air from the house into the attic. Unless an attic fan has also been installed, the whole house fan relies on passive methods to remove that air from the attic.

Are whole house fans healthy?

Healthier, more fresh home Whole house fans have many benefits besides just cooling the home and helping reduce electricity costs. They help improve the indoor air quality of a home by exhausting and ventilating the stuffy air, pet dander, allergens, germs, dust, and other pollutants inside the home.

Does a whole house fan need to be vented?

Venting Requirements The higher the CFM, the more venting area is required to keep the system working efficiently. A rule of thumb is that you should have one square foot of “net free venting area” for every 750 CFM of airflow. So at 3000 CFM, you’ll want four square feet of venting.

Can whole house fans cause mold?

Many homeowners that have a whole house fan love running them when they get out of the shower to exhaust all that steam and humidity that builds up and can cause mold.

Can you run a whole house fan with the windows closed?

No. A whole-house fan pulls in air from outside, through a window, then pushes it out your attic vents. Never operate the fan without opening windows, or if the air outside is colder or hotter than you want the inside of your house to be.

Why your home should have a whole house fan?

Pet dander and pet odor

  • Dirt and dust
  • VOCs
  • Rot,mold,or fungi
  • Is whole house fan good or bad?

    The whole house fan also helps with ventilation since it brings in the air from outside and pushes out your inside air. But it will also bring in pollen and other allergens so if you are allergic, you may want to reconsider. And the whole house fan is definitely the noisiest type of attic fan to have.

    Does a whole house fan actually save you money?

    Whole house fans can actually save you up to 90% on your electricity bill. Pacific Gas & Electric Co. (PG&E) claims that whole house fans use up to 90% less energy than compressor-based air conditioners. During the Summer months air conditioning can cost up to $300 a month from June to August.

    How do I Turn on a whole house fan?

    Turn ON the whole house fan. Flip the switch and run the whole house fan at its highest speed for around half an hour. Once the home is cool enough you can change the speed to a lower setting to reduce the fan’s energy consumption. Turn OFF the fan when it gets hot outside.