How much does air duct replacement cost for a typical home?

Air duct replacement cost for a typical home is determined after an in‑home evaluation, and Cranney Home Services provides a flat-rate proposal once we assess your duct size, layout, and access. The biggest price drivers are the home’s square footage and how complex the duct runs and fittings need to be for proper airflow.

Our team regularly replaces complete duct systems in homes around Quincy, so we can size and route new trunks and branches correctly. We also check for leaks, insulation needs, and airflow balance; we often find the return side is undersized even when supply ducts look fine. A $50 Off Air Duct Installation offer is available, and installation financing options are offered; final pricing is confirmed after inspection.

For clarity, key factors that change price include:

• Total duct length and number of branches
• Material and insulation specifications
• Access in attics, crawlspaces, or finished areas
• Design changes like adding returns and sealing/testing

Schedule a diagnostic visit so a technician can measure your system and provide a clear written price before work begins. <br/> Updated: 2026-03-29 <br/> Need help in Quincy, MA? Call (978) 716-5703 or book online. “Amazing full-system upgrade with properly insulated, optimized-for-airflow ducts.” — Aakash D.