The answer to 'how much to fix air handler in Illinois' is that the cost can vary widely depending on several factors. Generally, the cost to repair an air handler in Illinois can range from a few hundred dollars to over a thousand dollars, depending on the specific issue and the complexity of the repair.
Some key factors that influence the cost include the age and model of the air handler, the extent of the repair needed (e.g., replacing a fan motor vs. a full unit replacement), the labor rates in your local area, and whether any additional parts or materials are required. It's essential to get quotes from multiple licensed HVAC technicians in your local area to get an accurate estimate for your specific situation.