The answer to 'how much to replace ductwork' is that the cost can vary widely depending on several factors. Replacing ductwork is a major home improvement project that typically ranges from a few thousand dollars to tens of thousands, depending on the size of your home, the complexity of the ductwork, and the materials and labor required.
Some key factors that influence the cost include the size and layout of your home, the accessibility of the ductwork, the type of ductwork material (e.g., flexible, rigid, or insulated), and any necessary structural changes or repairs. Additionally, labor costs can vary based on your local market and the expertise of the HVAC contractor you hire.