Yes. A 2005 study found that in most homes with crawl spaces, up to 50 percent of the air in the home had at one time been in the crawlspace via leakage.
This moist damp air can buckle hardwood floors, create fertile ground for mold growth (an asthma trigger), attract pests and termites and can even cost more in terms of energy consumption.
According to one recent study, crawl spaces open to the outside are “moisture traps”. The E·Z Breathe® ventilation system acts as a vapor barrier, seals crawlspace vents and provides airflow from the conditioned portion of the home.
The E·Z Breathe® ventilation system provides airflow from the conditioned portion of the home and is specifically designed to exhaust and remove damp, moist, damaging air from crawlspaces.