The answer to 'how much to replace carbon monoxide detector in my area' is that the cost can vary widely depending on several factors, but typically ranges from $20 to $100 for a basic replacement unit. The actual price you'll pay will depend on the type of detector, the brand, whether it's a DIY installation or requires professional service, and your local market rates.
Carbon monoxide detectors are an essential safety device, so it's important to have them properly installed and maintained in your home. While some homeowners may be able to replace a detector themselves, it's often best to have a licensed electrician handle the job to ensure it's done correctly and up to code.