Whole House Fans

Whole House Fan Sales & Installation Experts Serving – Orange County, San Diego, Inland Empire and Los Angeles (877) 267-3205

U.S. Green Building Council Member

How Whole House Fans Work

The Most Effective Energy-Saving Solution for Your Home

A whole house fan is a quiet, energy-efficient and a pleasant way to keep your home cool and comfortable.

How it Works:

The diagram below illustrates how a Whole House Fan can provide effective natural cooling for a fraction of the energy cost of air conditioning by drawing cool fresh air in through open windows and purging hot stale air out through roof vents.

A diagram showing how Whole House fans expel hot air through the attic while pulling cooler air into living areas through windows.

As the outdoor temperature rises during the day, the heat is captured in the walls and interior spaces of your home, this makes cooling especially difficult and costly. When the temperature outside finally begins to cool, the heat trapped in your home during the day can often make the house uncomfortably warm – especially in second stories! Air conditioning, of course, is the normal solution to this problem, but air conditioning during the hot summer months is expensive.

CentricAir provides you with a great and cost effective solution to your problem! Due to its great cooling efficiency, a CentricAir system brings the temperature of your home down to a level that greatly reduces and in some cases eliminates the need for air conditioning. It also uses a fraction of the energy of a typical home air conditioning system.

Limitations of Whole House Fans

The unique CentricAir design eliminates many traditional limitations with whole house fans. Problems with loud intrusive operation, heat loss and maintenance issues are all solved. However, anyone considering a CentricAir Whole House Fan needs to understand that they do have inherent limitations as a cooling device. It is NOT the same as an air conditioning system.

A CentricAir Fan:

  1. Is only effective when outdoor air is cooler than indoor air. According to an article in the Orange County Register titled How to get your money’s worth out of a whole house fan, dated 8/26/10, “A whole house fan works best in climates where nighttime temperatures are often 72 degrees or less.”
  2. Requires at least one open window (more is better). Although it’s difficult to say which windows should be opened to admit the cool air while the fan is operating, some experimenting is usually required to get the best results. If the main objective is to cool upstairs bedrooms, then the best bet would be to open the upstairs windows six to 12 inches and open the upstairs doors to provide good air circulation.