The answer to 'how much to replace heat exchanger in Illinois' is that the cost can vary significantly depending on several factors. Typically, the cost to replace a heat exchanger in Illinois can range from $1,500 to $3,500 or more, depending on the size and complexity of the HVAC system, the brand and model of the heat exchanger, and the labor costs in your local area.
Some key factors that can influence the cost include the accessibility of the heat exchanger, the need for any additional repairs or modifications to the HVAC system, and the experience and expertise of the HVAC technician performing the work. It's essential to get multiple quotes from reputable local HVAC contractors to ensure you get the best price for your specific situation.