The answer to 'how much to replace AC repair in Chicago' depends on several factors, but typical costs can range from $3,000 to $7,000 for a full AC replacement. The exact price will depend on the size of your home, the efficiency of the new unit, any necessary ductwork modifications, and the labor rates in your local area.
It's important to get quotes from multiple licensed HVAC contractors in your area, as pricing can vary significantly. They will be able to assess your specific needs and provide an accurate estimate for the work required.