The answer to 'how much to replace heat exchanger in Illinois' is that the cost can vary widely depending on several factors. Typically, the cost to replace a heat exchanger in Illinois can range from $800 to $3,000 or more, depending on the size and complexity of the unit, the brand, and the labor required.
The specific cost will depend on the type of HVAC system, the accessibility of the heat exchanger, the cost of materials, and the labor rates in your local area. Additionally, the age and condition of the existing heat exchanger, as well as any necessary ductwork or electrical work, can also impact the final price. It's important to get quotes from multiple licensed HVAC contractors in your local area to get the most accurate estimate for your specific situation.