The answer to 'how much to fix air duct sealing in my area' is that the cost can vary significantly depending on several factors. In general, air duct sealing typically ranges from a few hundred to a few thousand dollars, depending on the size of your home, the accessibility of the ducts, and the extent of the sealing required.
The main factors that influence the cost of air duct sealing include the size and layout of your home, the materials needed (e.g., sealants, tape, mastic), the labor required to access and seal the ducts, and any necessary repairs or replacements. Additionally, the cost can be affected by the experience and expertise of the HVAC contractor you hire, as well as your location and local market rates.