How Often To Replace Hardwired Smoke Detectors. How often to replace smoke detectors in your home, plus the best types of smoke alarms and carbon monoxide detectors to keep your family safe. After about a decade, your sensors will become weak and less efficient, which makes it less likely for them to perform their most basic function:
All smoke detectors, including hard wired units, should be replaced every ten years. If you’re unsure when the battery was last replaced, replace it immediately and then once yearly after that. Write “replace in 2031” (or whenever it’s 10 years old) on the alarm’s back or mounting plate.
Smoke detectors need to be replaced every 10.
Your detectors are overdue for replacement, according to the national fire protection association, which recommends that you replace detectors when they’re 10 years old. Smoke alarm lifespans can vary, but according to the association, smoke alarms need to. You can purchase them at any big box store and install them in a matter of minutes. Turn the power back on and push the alarm’s test button.