The answer to 'how much to fix air conditioner in Illinois' is that the cost to repair an air conditioner can vary widely depending on several factors. Generally, the cost can range from a few hundred dollars for minor repairs up to $1,000 or more for more extensive issues.
Some key factors that influence the cost include the type and age of the AC unit, the specific problem that needs to be fixed, the labor rates in your local area, and whether any replacement parts are required. It's important to get quotes from multiple licensed HVAC contractors in your local area to get the best sense of the typical repair costs.