The answer to 'how much to replace air duct sealing local' is that the cost can vary widely depending on several factors. Typically, air duct sealing can range from a few hundred dollars up to $1,000 or more for a full home. The main factors that affect the cost include the size of your home, the accessibility of the ductwork, the condition of the existing seals, and the materials and labor required.
Proper air duct sealing is an important maintenance task to improve your HVAC system's efficiency and indoor air quality. It's generally best to have this work done by a professional HVAC technician who can properly inspect, clean, and seal all the ductwork in your home. They will use specialized tools and materials to ensure a thorough and long-lasting seal.