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

Air duct replacement cost for a typical home is confirmed only after an in‑home inspection because it depends on your duct design and installation conditions. The biggest drivers are the size of the system and home, plus how difficult it is to access ducts in attics or crawl spaces. A full replacement costs more than sectional repairs, but it can resolve chronic airflow problems and comfort gaps. Technician insight: when return ducts are undersized, adding a dedicated return can improve results more than enlarging supply runs. Our teams regularly replace attic ductwork in the Keller area under North Texas heat conditions.

Key factors that change price:

• Full vs partial scope (trunk, branches, plenums)
• Material choice and insulation level (R‑value)
• Accessibility and working space (tight attics, low crawl spaces)
• Number of supply and return runs to resize
• Duct sealing and post‑replacement testing
• Add‑ons like sanitizing, filtration cabinets, or UV air purification

Ask a licensed HVAC pro to test airflow and provide a written design and itemized quote before you decide. <br/> Updated: 2026-03-13 <br/> Need help in Keller, TX? Call (214) 612-0133 or book online.