How Can I Seal a Leaking Air Duct to Improve HVAC Efficiency?
You can seal a leaking air duct with mastic or UL 181 aluminum foil tape on accessible joints, but lasting efficiency gains usually come from professional duct repair and sealing. We offer air duct cleaning plus duct repair, testing, and sealing. Utility rebates may offset costs: SRP offers duct repair and testing rebates up to $400. APS offers duct repair and sealing rebates up to $250. Apply through the utility program and meet their criteria to qualify.
Quick checks:
- Seal visible seams and boots.
- Avoid cloth “duct tape.”
Sources
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