Duct sealing is the process of sealing all of the connections between the HVAC unit, the duct work, and the register vents in the home. Most homes that were built before 2005 that we inspect all have some degree of air leakage in their ductwork. For these homes an estimated 15% - 35% of the air cooled by the HVAC unit is being leaked directly into the attic space. Sealing the duct work ensures that none of the conditioned air is being blown into the attic and no harmful irritants and allergens enter into the ductwork. For most homes sealing the ductwork is the first and best step in moving forward to improving the energy efficiency of the home. Home owners can expect to save 20% - 40% on there heating and cooling costs depending on the degree of duct work air leakage. The majority of home owners see a “return on investment” for sealing their ductwork of only less than one year, in addition to the ability to cool and heat the house in less time.