What is the typical lifespan of a residential smoke detector?

The typical lifespan of a residential smoke detector is approximately 10 years. Over time, the sensors within smoke detectors can degrade, which may affect their ability to detect smoke and fire effectively. After this period, the reliability of the device can diminish, making it essential to replace older smoke detectors to ensure a household's safety.

While some smoke detectors may function beyond this timeframe, relying on an aging device in a critical safety role is not advisable, as their performance may not be as reliable. Regular maintenance and checking the manufacturer guidelines can help reinforce the importance of timely replacements.