Performed comprehensive ductwork cleaning and sealing in Carteret, NJ residence. Utilized Rotobrush BrushBeast with HEPA filtration to remove debris from supply and return ducts. Applied Aeroseal duct sealing process, reducing leakage from 35% to 8%. Sealed accessible joints with mastic and UL-181 tape. Installed new R-8 insulation on exposed ducts in unconditioned spaces. Conducted post-sealing duct blaster test, achieving 50 Pascal pressure. Final system airflow increased by 22%, improving overall HVAC efficiency and indoor air quality.