The answer to 'how much to replace installation in Chicago' depends on several factors, but typical costs can range from $3,000 to $10,000 or more. The specific price will depend on the size and complexity of your HVAC system, the type of equipment being installed, the accessibility of the work area, and the labor rates in your local market.
It's important to get multiple quotes from licensed and insured HVAC contractors in your area, as prices can vary significantly. Be sure to ask about any rebates or incentives that may be available to offset the cost of the installation as well.