Ductwork and Condensation in the crawl space

Many crawl spaces are home to the ductwork that delivers conditioned air to the rooms in our home. Since vented dirt crawl spaces are outside, this means we're allowing our ductwork to live outside and be affected by the elements. As condensation collects on the duct lines, think about it like setting a glass of iced tea outside on a hot summer day, it can deteriorate the duct insulation, if present or result in rust on the duct lines. Gaps in ductwork also allow allergens and dust to find their way inside your home.