What is the Stack Effect?

The stack effect is the natural flow of air in a building from bottom to top. Aided by open crawl space vents, air enters at the bottom of your house (the crawl space), rises up through the structure, and exits through the attic.  

Approximately 50 percent of the air you’re breathing in your home comes from the crawl space. 

To learn more about how problems in your crawl space affect the rest of your house, check out our page detailing the stack effect.