I just completed a full HVAC duct cleaning service for a client's home. I used a high-powered truck-mounted vacuum system to remove accumulated dust, debris, and pet dander from the supply and return ducts throughout the house. I also treated the ductwork with an EPA-registered antimicrobial sealant to inhibit future microbial growth. The air flow has been restored, improving the system's efficiency and indoor air quality for the homeowner.