The answer to 'how much to replace AC repair in Chicago' is that the cost can vary widely depending on several factors. Typically, a full AC unit replacement in Chicago can range from $3,000 to $7,000 or more, depending on the size of your home, the efficiency of the new system, and the complexity of the installation.
Some key factors that influence the cost include the age and condition of your existing system, the brand and model of the new unit, whether any ductwork or electrical work is required, and the labor rates in your local area. It's important to get multiple quotes from licensed HVAC contractors in your area to understand the typical range for your specific needs.