The answer to 'air duct sealing repair cost' is that the cost can vary widely depending on several factors. Typical ranges for professional air duct sealing repair can be anywhere from a few hundred dollars to several thousand, depending on the size of your home, the extent of the repairs needed, and your local market rates.
Some key factors that influence the cost include the accessibility of the ducts, the materials needed, the complexity of the repairs, and whether any ductwork needs to be replaced. Larger homes with more extensive ductwork will generally cost more to seal than smaller homes. Additionally, the experience and expertise of the HVAC contractor you hire can also impact the final price.