Attic Fan Direction

Most houses only have one gable fan at one end and a vent the same size as the fan at the other end and of course the soffit vents.

Bathroom fan maintenance. These fans are usually wired to run in one direction. If the vent fan is only pulling out of the garage and not the attic space then it wouldnt help the attic much which is what you want to cool. However the utility of attic ventilation fans is actually quite a controversial topic.

Attic fans mounted on the roof will cost more than those installed on the walls. If your vent fan does not have a built in switch to reverse the direction in which the fans blades rotate you can manually require the fan to run in a reverse polarity. For installation in the roof you will have to open the roof and to fix them may require additional labor making it costly.

Another factor is the labor cost which differs among companies. The downside of attic ventilation fans. 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.

Vent fans such as those found in attics run off 110 volt ac alternating current and you can reverse the wire connections on the motors coils to achieve this goal. One static vent style is the turbine vent which uses wind to power its enclosed fanall it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home. Good insulation reduces fan effectiveness.