How Much Does Ductwork Repair Cost? [2026 Data]

Ductwork repair costs $300–$2,500. Sealing leaks runs $300–$800. Replacing a section of duct costs $500–$1,500. Full duct replacement is $2,000–$6,000.

Access (attic, crawl space, behind walls) affects labor. Insulation upgrade adds $200–$800.

Leaky ducts can waste 20–30% of conditioned air. Professional sealing often pays for itself in energy savings within a few years.