The time it takes to replace Ductwork A pipe or conduit through which air is delivered. Ducts are typically made of metal, fiberboard or a flexible material. In a home comfort system, the size and application of ductwork is critical to performance and is as important as the equipment. " data-gt-translate-attributes="[{"attribute":"data-cmtooltip", "format":"html"}]">ductwork will vary depending on the size and layout of your home. It is typically a fairly quick job, taking only a few hours to a day to complete. However, it may take longer if your home is large or complex. In any case, it is consistently best to consult with a professional before beginning any work to ensure it is done correctly.