Theory behind attic fans is they work on the principle of drawing hot air out of the attic and pushing it outside through the gable or roof levels.
Roof exhaust fan working principle.
As the air leaves it creates negative pressure behind it sucking in cool air from below into the soffits and creating a self repeating ventilation process.
Once inside the air heats up and rises higher ultimately exiting through venting at the roof s gables through ridge vents cut into the roof s apex or other vent holes in the roof.
Intake vents located at the lowest part of the roof under.
3 phase motors field convert from 230v to 460v.
Single phase motors are field convertible from 115v to 230v.
All whole house fans should be installed with rubber or felt gaskets to dampen noise.
As hot air rises to the top fans push the hot air out and cool down the home by drawing in the fresh air.
They can help you save a lot of money on your energy bills as you may not have to use air conditioning if the weather isn t too hot.
Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
You can set a multi speed fan to a lower speed when noise is a problem.
In simple terms it replaces the hot air in the attic with fresh air from outside.
Using your duct system as a whole house fan.
These roof ventilation fans are weatherproof to ensure long life for outdoor safekeeping.
Rolled venturi surrounds fan within the 18 gauge galvanized steel wind band.
Rugged steel base with welded mounting plates allows easy installation.