The answer to 'how much to replace air duct sealing in Chicago' is that the cost can vary significantly depending on several factors. Typically, the cost to replace air duct sealing in the Chicago area can range from $500 to $2,000 or more, depending on the size of your home, the complexity of the ductwork, and the extent of the sealing required.
The cost is influenced by the materials used, the labor involved, and any necessary repairs or modifications to the ductwork. It's important to get quotes from multiple local HVAC contractors to compare prices and find the best solution for your home.