Advanced Duct Sealing (ADS) is a proven HVAC distribution system efficiency measure that uses aerosol-based technology to identify and seal air leakage within residential and light commercial duct systems. The measure delivers verified pre- and post-treatment leakage reductions, typically achieving 50–90% reductions in duct leakage and resulting in persistent energy savings, reduced HVAC runtime, and improved system performance. ADS is particularly applicable in existing homes and buildings where duct leakage remains a significant source of energy waste and peak demand. By reducing conditioned air losses, the measure lowers heating and cooling loads, decreases electric demand during peak periods, and improves the effectiveness of high-efficiency HVAC equipment, including heat pumps. The measure is supported by extensive field experience, established quality assurance procedures, and a growing body of utility program data demonstrating consistent and measurable savings. The proposed measure would provide the region with a scalable, verifiable, and cost-effective strategy for achieving both energy efficiency and demand reduction objectives.
