The Solution To Traditional Sizing Methods: Whole House Fans With Moderate Air Flow Rates

A Traditional Sized Whole House Fan:

• Moves Massive Amounts Of Air
• Leaves A Large Open Hole In Your Ceiling
• In Most Cases Does Not Allow For Proper Roof/Attic Venting

A Whole House Fan With A Moderate Air Flow Rate, Like The Fans Found Here Can Be More Efficient & Just As Effective:

• They Are Easier To Install & Require No Joist Cutting
• Require Much Less Roof & Attic Ventilation
• Operate At Reduced Noise Level
• Are Insulated And Also Require No Maintenance

Why These Whole House Fans Work?  Based On Our Years Of Experience...

The Greatest Gains When Operating A Whole House Fan Occur Within The First Few Air Exchanges.  As The Whole House Fan Quickly Removes The Hot Air In The Home And Superheated Air In The Attic...

However, Since The Home Is Releasing Heat Stored Throughout The Day The Home Will Heat Right Back Up If A Constant Flow Of Air Is Not Present.  We Have Found This Flow Does Not Have To Be The Equivalent Of Tornado Force Winds (Traditional Fans).  In Fact, A Moderate Flow Of Air Continuously Removing The Radiating Heat Works More Efficiently.

How Long Will It Take To Cool Your Home?

All homes are unique and their are many factors that determine how long it will take your home to cool down.  A whole house fan is not air conditioning.  A whole house fan works fastest when their is a large difference between the outdoor air temperature and indoor air temperature.

For example, on a spring day, say peak daytime temperatures hit 80 degrees Fahrenheit, the inside of your home warms up to an uncomfortable 90 degrees F.  During the evening hours, the outside temperature drops below 55 degrees F.  When you turn on your whole house fan cooling happens and it will it is very quick.  This is because you are replacing your homes air with 60 degree air - and removing much hotter air.

Now take a hot summer day, where daytime temperatures exceed 95 degrees F.  As the sun beats down on your home, heat begins to store in your attic and home's structure.  Attic temperatures could easily exceed 140 degrees F.  During the evening, the outdoor air temperature drops to a range in the high 70's.  The moment your whole house fan turns on, the cooling process begins, as the fan replaces hot air with cooler outside air.  Cooling in this case happens, but at a slower rate.