The answer to 'how much does system upgrade cost in Chicago' is that the cost of upgrading an HVAC system in Chicago can vary widely depending on several factors. Typically, a full system replacement can range from $4,000 to $12,000 or more, with most homeowners spending between $6,000 and $10,000.
The exact cost will depend on the size of your home, the efficiency and type of new equipment, the complexity of the installation, and any necessary ductwork or electrical upgrades. Labor costs, which can make up 30-50% of the total, also vary based on the contractor and your location within the Chicago area.