The answer to 'how much to replace a circuit breaker in Chicago' is that the cost can vary quite a bit, but typically ranges from $150 to $500 for a professional to replace a single circuit breaker. The exact price will depend on factors like the age and type of your electrical panel, whether you need to upgrade the panel, and the labor rates in your local area.
It's generally best to hire a licensed electrician to handle circuit breaker replacements, as they can ensure the work is done safely and up to code. While some homeowners may be able to replace a simple circuit breaker themselves, it's often risky for those without electrical expertise. Getting multiple quotes from local electrical contractors is essential to finding a fair price in your area.