The answer to 'smoke detector replacement schedule' is that smoke detectors should be replaced every 10 years. Smoke detectors are essential safety devices that alert you to fires in your home, but their sensors can become less reliable over time. Most manufacturers recommend replacing smoke detectors after 10 years of use to ensure they are functioning properly and providing adequate protection for your family.
It's a good idea to mark the installation date on each smoke detector so you know when it's time to replace them. You should also test your smoke detectors monthly and replace the batteries twice a year to keep them in good working order between replacements.