Roof Exhaust Fan Working Principle

Cold air is drawn in from outside through the soffit vents or roof.

Roof exhaust fan working principle.

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. You can set a multi speed fan to a lower speed when noise is a problem. Attic fans are installed at the roof level of your home to regulate the heat level. Using your duct system as a whole house fan.

All whole house fans should be installed with rubber or felt gaskets to dampen noise. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. In simple terms it replaces the hot air in the attic with fresh air from outside. 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.

Intake vents located at the lowest part of the roof under. Rugged steel base with welded mounting plates allows easy installation. Single phase motors are field convertible from 115v to 230v. 3 phase motors field convert from 230v to 460v.

These roof ventilation fans are weatherproof to ensure long life for outdoor safekeeping. As hot air rises to the top fans push the hot air out and cool down the home by drawing in the fresh air. 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.