Features

• A solar attic fan will keep your house cooler without increasing your electrical bill. These fans exhaust the heated air stored in the attic while ventilating the attic with cooler air from the outside.
  
  

Effectiveness

• Where you install your solar attic fan will determine its efficiency. Install the solar module in a sunny area shaded as little as possible during the day. Examine to ensure that the attic floor has no air leaks. Depending on the size of your roof, you might install more than one fan.
  
  

Cost

• A solar attic fan will not only save you money in the long run, it will also go easy on the environment. The price of a solar attic fan ranges between $300 and $600 as of December 2010, not including installation. This is somewhat more than an electric fan, but it operates without any cost.