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 30 to 60 air changes per hour (varies with climate, floor plan, etc.—check with a professional to determine what is appropriate for your home). The air-change rate you will choose depends on your climate and how much you will depend on the whole house fan for cooling.
Whole house fans combined with ceiling fans and other circulating fans provide acceptable summer comfort for many families, even in hot weather. In addition to whole house fans, the ducts of your central heating and cooling system can be modified to provide whole house cooling.
Installing and Using a Whole House Fan
Installing a whole house fan is tricky at times and should be done by a HVAC professional. An experienced professional should take your attic measurements and install your dedicated circuit wiring and, if needed, your new attic vents.
Attic ventilation will usually need to be increased to exhaust the fan’s air outdoors. You’ll need 2 to 4 times the normal area of attic vents, or about one square foot of net free area for every 750 cubic feet per minute of fan capacity. More vent area is better for optimal whole house fan performance.
If your fan doesn’t come with a tight-sealing winter cover, you should either buy one or build one. If you switch between air conditioning and cooling with a whole house fan as the summer weather changes, build a tightly sealed, hinged door for the fan opening that is easy to open and close when switching cooling methods.
Quiet Cool Fan
A Quiet Cool whole house fan is an advanced ventilation cooling system for your home that uses less energy than a traditional air conditioner or traditional whole house fan (also known as an attic fan) and it is quieter, too.
This energy efficient system works by pulling cooler air from the outside of your home to the inside, creating active cross breezes with open windows. Since it is normally cooler in the evenings, you would turn on your Quiet Cool fan, open a few windows and the whole house fan will cool and ventilate your entire home.
Because the hot air is vented through the attic to the outside, your home stays cooler the next day as well. Your home will feel fresh and cool with a whole house ventilation fan.
Quiet Cool is the patented whole house fan and ventilation system that is whisper-quiet compared to the traditional, old fashioned system. And because it’s quiet, people will let it run for hours and hours at a time, allowing the system to do its work!