How Often To Change Smoke Detectors. Most people don't change the batteries in their smoke detectors often enough and that's the most likely reason why they go off unexpectedly. How do you know if a smoke detector is going bad?
Ionization units are prone to false alarms from burnt food and steam, so don’t mount them near a kitchen or bathroom. Ionization smoke detectors are best at detecting the small particles typical of fast, flaming fires but in our tests, all tested poorly for detecting smoky, smoldering fires. Do you really need to replace smoke detectors every 10 years?
There are 2 types of smoke detectors according to the local fire department.
The life expectancy of smoke alarms is generally 10 years, after which point their sensors can begin to lose sensitivity. Ionization smoke detectors are best at detecting the small particles typical of fast, flaming fires but in our tests, all tested poorly for detecting smoky, smoldering fires. How to remember to replace the battery in a hard wired smoke detector. An easy way to remember to do this is to change your smoke detector’s batteries when you change your clocks for daylight savings time.