What is a 'solar attic fan'?

What is a 'solar attic fan'?

Dan Sharp (Green Family Expert) gives expert video advice on: Does my air conditioner contribute to 'carbon emissions'?; What can I do to the outside of my windows to make them more energy efficient? and more...

A solar attic fan will vent the attic. It will remove hot air from the attic, and it's powered by the sun. It sucks air from the attic, which reduces the heat buildup, thus reducing the amount of energy that's needed to cool the house.