Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.
Attic fan direction.
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.
These fans are usually wired to run in one 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.
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.
The fan is warranted for five years draws a mere 3 2 amps and is capable of handling an attic area up to 1500 sq.
However the utility of attic ventilation fans is actually quite a controversial topic.
During the summer an attic can be 40 to 50 hotter than the outside temperature which in turn heats up the house very quickly.
The downside of attic ventilation fans.
Quietcool attic fans work almost everywhere almost anytime.
Good insulation reduces fan effectiveness.
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.