The answer to 'how much to replace duct cleaning in Illinois' is that the cost can vary widely depending on several factors. Typical duct cleaning costs in Illinois can range from $300 to $700 for an average-sized home, but the actual price will depend on the size of your home, the complexity of your ductwork, and the extent of cleaning required.
Some key factors that influence duct cleaning costs include the number of vents, the accessibility of the ducts, the presence of any mold or debris buildup, and whether your system requires additional services like sanitizing or sealing. It's important to get multiple quotes from reputable HVAC companies in your local area to find the best price for your specific needs.