There is a system of ductwork in most West Knoxville, TN, homes. That HVAC ductwork will deliver warm or cool air to the various living spaces in your residence. This occurs once your furnace or AC conditions the air. Ducting can last anywhere from 10 to 25 years, depending on how well you take care of it, but all ducts need cleaning, repair, and replacement eventually. Maintenance includes things like inspections, cleaning, repairs, sealing, and other tasks. There may be a time when you need an HVAC professional to replace a section of your ducts due to damage.