The answer to 'how much to fix system upgrade in Chicago' is that the cost can vary widely depending on several factors. Typical system upgrade costs in the Chicago area can range from $3,000 to $10,000 or more, depending on the size of your home, the complexity of the system, and the specific equipment and labor required.
Some key factors that influence the cost of an HVAC system upgrade include the age and condition of your existing system, the energy efficiency of the new equipment, the complexity of the installation, and any necessary ductwork modifications. Larger homes or those requiring more extensive work will generally be on the higher end of the cost range. It's essential to get quotes from multiple local HVAC contractors to understand the specific costs for your home and needs.