Aeroseal is a patented technology created by the Lawrence Berkeley National Laboratory (see Aeroseal history https://aeroseal.com/aeroseal-history/ ) that seals duct work from the inside. The first time I saw the results on a customer’s home, I was blown away. The difference in leakage reduction between Aeroseal and a manual mastic seal was incredible. Sealing your ductwork with Aeroseal increases your business or home’s indoor air quality, helping to eliminate dust, allergens, and odors coming inside from unconditioned spaces. We provide free estimates, please give us a call at 602-427-2400.