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

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Air duct replacement cost for a typical home is confirmed after an on-site inspection and written proposal from Ultimate Heating & Air, with financing available as low as $107 per month. The biggest driver is home size and how easy it is to access the existing ductwork. Material selection and any needed layout changes to improve airflow also influence price. Our team regularly replaces duct systems in the Boise area and provides a comprehensive report before any work begins. If ducts are rusted, undersized, or leaking in many spots, replacement usually costs less over time than repeating spot repairs. A technician will measure room-by-room airflow rather than guessing from square footage. - Your estimate will reflect: number of supply/return runs - Attic or crawlspace access and working clearances - Insulation and sealing needed for efficiency and comfort - Add‑ons like extra returns, balancing dampers, or redesign of problem rooms Schedule a diagnostic so we can price your options clearly and confirm whether repair or full replacement makes more sense.
Updated: 2026-04-03
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