This home had HVAC trunks in the crawl space of the home. With a crawl space that does not have an encapsulation system along with insulation on the foundation wall leaking ducts allow cool and hot air into the crawl space that is lost to the outside world. By encapsulating a crawl space with the CleanSpace Encapsulation System we are able to keep the heated and cooled air inside of the home making the HVAC work more effective.