The answer to 'how much to replace furnace repair in Illinois' is that the cost can vary widely depending on several factors. Typical furnace replacement costs in Illinois can range from $2,000 to $7,000 or more, including labor and materials. The specific cost will depend on the size and efficiency of the new furnace, the complexity of the installation, and any necessary ductwork or electrical work.
It's important to get quotes from multiple licensed and insured HVAC contractors in your local area, as prices can vary significantly. Be sure to compare the equipment, labor, and warranty details to find the best value for your home.