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.

Roof exhaust fan working principle.

All whole house fans should be installed with rubber or felt gaskets to dampen noise. Rolled venturi surrounds fan within the 18 gauge galvanized steel wind band. In general a large capacity fan running at low speed makes less noise than a small fan operating at high speed. You can set a multi speed fan to a lower speed when noise is a problem.

3 phase motors field convert from 230v to 460v. In simple terms it replaces the hot air in the attic with fresh air from outside. Attic fans are installed at the roof level of your home to regulate the heat level. These roof ventilation fans are weatherproof to ensure long life for outdoor safekeeping.

Cold air is drawn in from outside through the soffit vents or roof. 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. 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. Rugged steel base with welded mounting plates allows easy installation.

Using your duct system as a whole house fan. Single phase motors are field convertible from 115v to 230v. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.