The answer to 'how much to replace system upgrade in Chicago' is that the cost can vary significantly depending on several factors. Typically, a full HVAC system replacement in the Chicago area can range from $5,000 to $15,000 or more, depending on the size of your home, the complexity of the installation, the efficiency of the new system, and other considerations.
The most important factors that influence the cost of an HVAC system upgrade include the type of system (e.g., central air conditioning, heat pump, furnace), the size and capacity needed for your home, the brand and energy efficiency rating, and any necessary ductwork modifications. Labor costs, which can account for 30-50% of the total, also vary based on the complexity of the installation and your location within the Chicago metropolitan area.