Attic Fan Air Flow Direction

Intake vents located at the lowest part of the roof under the eaves allow cool.

Attic fan air flow direction.

After entering the soffit air needs to flow upward and exit through gable vents or ridge vents cooling the roof structure and roof covering to outdoor temperature. You place the fans on the gable walls of your attic. Attic fan ventilation attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. A clockwise ceiling fan direction for high ceilings is especially important in winter.

Ceiling fan direction in the winter should be clockwise and the fan should run at the lowest speed. A fan set to move clockwise opposite the ceiling fan direction in summer and run on low speed creates an updraft. Powered attic ventilator fansdesigned to cool your attic by drawing the hot and humid air out of the attic and bring in a flow of chilly air from outside. This pulls cool air up toward the ceiling which in turn displaces the warm air that rises and collects near the ceiling.

However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic. These fans are usually wired to run in one direction. That pulls cold air up to the ceiling and more evenly distributes the warmth the. Whole house fans are used to blow hot air out of the attic by sucking cool air through the house up though the whole house fan and out though the gable vents in the attic.

A ceiling fan that spins clockwise will draw cooler air up and force warmer air near the ceiling down and out toward walls. Again terminology gable vents are vents that are installed on the ends of the roof rise and ridge vents are installed at the peak of the roof.