The answer to 'how much to fix air handler in Chicago' is that the cost to repair an air handler can vary significantly depending on several factors. As an experienced HVAC technician, I can say that typical air handler repair costs in the Chicago area can range from a few hundred dollars to over a thousand dollars, depending on the specific issue and the scope of work required.
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 motor vs. a full component overhaul), the accessibility of the unit, and any related ductwork or electrical work that may be required. Labor costs in your local area can also play a role. The best way to get an accurate estimate is to have a qualified HVAC technician inspect your system and provide a detailed quote.