The answer to 'how much to replace replacement in Chicago' is that the cost can vary significantly depending on several factors. While there is no one-size-fits-all price, homeowners in the Chicago area can typically expect to pay anywhere from $3,000 to $10,000 or more to replace their HVAC system.
The exact cost will depend on the size of your home, the efficiency and type of new system, any necessary ductwork modifications, labor rates in your local area, and whether you need to upgrade electrical or other components. It's essential to get multiple quotes from reputable HVAC contractors to understand the range of pricing for your specific needs.