The answer to 'price of new air duct sealing' is that the cost can vary widely depending on several factors. Typical ranges for professional air duct sealing can be anywhere from $500 to $2,000 or more, depending on the size of your home, the complexity of the ductwork, and the materials and labor required.
Some key factors that influence the cost include the accessibility of the ductwork, the number of vents and registers that need to be sealed, whether any ductwork repairs are needed, and the quality of the sealant materials used. DIY air duct sealing kits are available for a few hundred dollars, but professional installation is often recommended to ensure proper sealing and maximize energy efficiency.