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

Air duct replacement cost for a typical home varies widely and must be confirmed after an on-site assessment of your system. Replacement can involve new duct runs, sealing, insulation, and balancing to restore proper airflow, so scope drives price more than any single part. In many homes, targeted repairs or duct upgrades during equipment replacement solve airflow issues without a full change-out. A small layout change, like adding a return in a starved room, often fixes comfort problems more effectively than upsizing every trunk. Our team serves the Olney area with assessments that focus on function first, then cost. We provide upfront pricing, and free estimates are available on system replacements where duct upgrades are part of the install. Schedule an in-home evaluation to get a firm, written quote based on your layout and access points.

Key price factors include:

• Total length and number of supply/return runs
• Duct material and required insulation level
• Attic, crawl, or closet access and difficulty
• Design changes such as added returns or resized trunks

Updated: 2026-03-25

Need help in Olney, MD? Call (410) 593-1980 or book online. "The technicians were timely, kind, and went above and beyond... made improvements to the duct system and made my filter more accessible." — Luke P.