The answer to 'how much to replace smoke detector in my area' is that the cost can vary significantly depending on several factors. Generally, the typical range for replacing a single smoke detector in a home is between $50 to $200, including both the cost of the device and the labor to install it.
The exact price will depend on factors such as the type of smoke detector (ionization, photoelectric, or combination), whether it's a basic model or one with advanced features, the accessibility of the location, and the labor rates in your local area. It's essential to get quotes from licensed electricians or home services providers in your vicinity to get an accurate estimate for your specific needs.