Seal small duct leaks with mastic sealant or UL 181 foil tape to improve efficiency. Do not use cloth duct tape. Clean and dry surfaces, then seal seams, joints, elbows, and boots. Insulate after sealing if exposed. If you see torn flex, large gaps, or pest damage, schedule professional repair and airflow testing. Aire Care provides duct inspections and repairs, and our checklist includes “Check supply and return air ductwork.” Maintenance memberships can include repair discounts.
Updated: 2025-12-23
Need help in Knoxville, TN? Call 865-658-8450 or book online.