Attic Fan Blade Orientation

The leading edge of the blade will be covered with dirt.

Attic fan blade orientation. The motor s nameplate depending on manufacturer may contain information on direction of blade rotation. Some whole house fans however can be reversed to spin in the opposite direction. Air will blow in the other direction towards the back. These fans are usually wired to run in one direction.

A ceiling fan should rotate counterclockwise in the summer so the blades push cooler air down in a column. 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. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home. Likewise if the blade is angled down and the fan turns the opposite direction the reverse is true.

It allows you to turn your thermostat up a few degrees.