The answer to 'how much to fix thermostat in Chicago' is that the cost to repair a thermostat can vary widely depending on several factors. Generally, minor thermostat repairs like replacing batteries or recalibrating the unit can range from $50 to $150, while more complex issues like replacing the entire thermostat may cost $200 to $500 or more.
The specific cost will depend on the type of thermostat, the complexity of the repair, the labor rates in your local area, and whether any additional parts or equipment are needed. It's best to get quotes from multiple licensed HVAC technicians in your Chicago neighborhood to compare prices and find the most affordable option.