Crawl Space Ventilation Fans Protect Home Structure and Promote Health of Occupants

White Bear Lake, Minn. —A family of new crawl space ventilation fans, called “UnderAireTM”, developed by Minnesota based-Tjernlund Products, offer homeowners a simple, easy and cost-effective way to mechanically circulate fresh outdoor air underneath homes and porches. Left untreated, high humidity in these enclosed areas can foster a myriad of structural problems including premature rotting of structural support columns, joists, floors and beam supports (increasing the potential for termite infestation) as well as plumbing failures due to rusting and corrosion. On the other hand, proper