Do Fans in Attic Help?
What are the facts regarding Do Fans in Attic Help? Explore the insights in this feature article.
The general rule of thumb in these situations is of roughly one vent per every 300 square feet of attic area if the attic has a vapor barrier. If not, there should be one vent for every 150 square feet. You will need to have 1 square foot of vent area for every 150 square feet of attic space.