The answer to 'how much to replace thermostat in Chicago' is that the cost can vary widely, typically ranging from $100 to $500 or more. The exact price will depend on factors like the type of thermostat, the complexity of the installation, and whether any additional HVAC system work is required.
Basic, non-programmable thermostats are generally the least expensive, while smart, Wi-Fi-enabled thermostats can be on the higher end of the range. Labor costs can also significantly impact the total price, as an experienced HVAC technician will need to properly install and configure the new thermostat to ensure it integrates seamlessly with your home's heating and cooling system.