Build Whole House Fan. I live in a climate with hot days and cool nights so this works great for me. Efficiently refresh and cool your home with a whole house fan.
Make a quick, easy and inexpensive whole house attic fan to reduce the electricity costs. Efficiently refresh and cool your home with a whole house fan. The backdraft damper allows warm air to leave the house but doesn’t let hot attic air enter back into the house when the whole house fan isn’t.
The reasons for replacing the other fan were the loss of heat through the uninsulated louvers and the racket it made when operating.
When should i turn the whole house fan on? This will help you cut the fan to the proper dimensions. I used to have this vision of somehow combining one with a roof exhaust fan in a giant duct would be swell. To determine how much attic ventilation you need, divide the fan's cfm by 750.