The answer to 'how to fix ductwork' is to inspect, seal, and repair any leaks or damage in your home's ductwork. Properly maintaining your ductwork is essential for ensuring efficient and effective HVAC performance, as well as improving indoor air quality.
Start by visually inspecting your ductwork for any obvious signs of damage, such as holes, cracks, or disconnected joints. Use a duct sealant or mastic to seal any leaks you find. For more extensive damage, you may need to replace sections of ductwork. If you're not comfortable doing this yourself, it's best to hire a professional HVAC technician to handle the repairs.