What is a Whole House Fan & How Does It Work?


A Whole House Fan is an Eco - friendly, efficient way to cool & clean your home.









1. When the temperature cools in the evening, just open a few windows and turn on your Whole House Fan.

2. The Whole House Fan draws cool, fresh air from outside into and through your home, taking dust, odors, virus & bacteria, pollen, dander and toxins up and out the attic vents.

3. By drawing air into your attic, you will force the hot attic air, which can soar up to 160 degrees in the summer, out of your existing roof vents. This is called Thermal Mass Cooling (see below)

4. We recommend running the unit for 2 to 3 hours in the evening and running it again in the morning

     for an addition 30 minutes to 1 hour.

Colorado's climate is perfectly fitted for a Quiet Cool Whole House Fan.

No matter how hot it gets during the day, our nights always cool down by 20-30 degrees.

It is precisely that Rocky Mountain cool air that our fans use to cool & clean your house and attic in a matter of minutes.

You will experience the immediate benefits of a Whole House Fan

as a cool, refreshing breeze comes whirling through your home. And Ladies, you will dust less!

Your home has now been made cooler, cleaner, healthier, & more comfortable.

Here is what satisfied customers

have to say about their Quiet Cool whole house fans.


QuietCool should be used anytime the outside air temperature is lower than the inside temperature. This is key for the principle of Thermal Mass Cooling to work.


What do many people do when they come home after work and it is really hot inside but cool outside? They open their windows instead of turning on their A/C so they can draw in that cool air. These open windows create a "passive" cross breeze and cool the home through thermal mass cooling.


  The “passive” cross breeze described above becomes an “active” breeze for QuietCool homeowners and this is the key to thermal mass cooling. Passive breezes within a home will eventually cool the ambient air to a comfortable level but will not move enough air to cool the mass within the home.

  When correctly sized, a QuietCool system will fully exchange the entire air volume of a home 15-20 times per hour, or about one full air exchange every 3 to 4 minutes. The “active” breeze is how QuietCool thrives.

  Mass “cooling” results because the QuietCool system is removing stale, hot air and replacing it with fresh cool air. All of this is occurring at a high rate of speed and volume, 15-20 times per hour, which is why it works so much better than a simple cracked window.

  Therefore, instead of recycling hot, stale ambient air through a closed-loop air conditioning system, the QuietCool system is exchanging hot, stale ambient air with fresh, cool outside air, through an open-loop whole house ventilation system… and at a fraction of the cost of running an air conditioner.


  A “cool mass” home does not reheat as much or as quickly as a “hot mass” home. Within a day or two of installing a QuietCool system, homeowners are amazed when they come home after work and their house is still cool from the night before!

  The reason the home remained cool was that the mass of the home had been cooled by a QuietCool system and thus did not reheat as rapidly as it typically would.