Roof Exhaust Fan Working Principle

In simple terms it replaces the hot air in the attic with fresh air from outside.

Roof exhaust fan working principle.

Rolled venturi surrounds fan within the 18 gauge galvanized steel wind band. As hot air rises to the top fans push the hot air out and cool down the home by drawing in the fresh air. Single phase motors are field convertible from 115v to 230v. Intake vents located at the lowest part of the roof under.

You can set a multi speed fan to a lower speed when noise is a problem. All whole house fans should be installed with rubber or felt gaskets to dampen noise. Rugged steel base with welded mounting plates allows easy installation. 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. 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. Cold air is drawn in from outside through the soffit vents or roof. In general a large capacity fan running at low speed makes less noise than a small fan operating at high speed.

These roof ventilation fans are weatherproof to ensure long life for outdoor safekeeping. 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. 3 phase motors field convert from 230v to 460v.