The answer to 'how much to replace tune-up in Illinois' is that the cost can vary significantly depending on several factors. Generally, a routine HVAC tune-up in Illinois can range anywhere from $75 to $200 or more. The exact price will depend on the size and complexity of your system, the technician's labor rates, and your location within the state.
Factors that can influence the cost of an HVAC tune-up include the age and condition of your system, whether any repairs are needed, the cost of replacement parts, and the reputation and experience level of the HVAC contractor. It's important to get multiple quotes from local HVAC companies to ensure you're getting a fair price for the work.