When Should Hard Wired Smoke Detectors Be Replaced?

General Information

• Smoke detectors use two different types of technology. Ionization smoke detectors recognize flaming fires when there is an electrical current change. Photoelectric smoke detectors recognize smoldering flames when the smoke activates the alarm. Many smoke detectors use both types of technology, including hardwired smoke detectors. Hardwired smoke detectors connect the alarms to your alarm system or electrical circuit so that when one alarm goes off, all of the alarms are activated and will also sound.

Standard Replacement

• Most hardwired smoke detectors have a lifetime of seven to 10 years. Read the manual that comes along with your smoke detector to determine its standard replacement time. Some hardwired smoke detectors have a battery backup that requires replacement every year, even though it is also operating on AC power. If the smoke detector also inspects for carbon monoxide it needs to be replaced every five years.

Problems

• Every week you should test your hardwired smoke detectors. Press the "Test" button on each smoke detector. If the alarm does not properly sound, make sure that no breaker has gone out by checking your circuit box. Otherwise, replace the smoke detector. If you have a hardwired smoke detector, replace the batteries immediately if you hear a low battery sound emitted from your smoke detector.

Other Factors

• If you use hardwired smoke detectors in an RV, check your smoke detectors more often due to temperature variances. Inspect the smoke detector after your RV has been stationed in storage, before every outing and once a week while in commute. If your smoke detector is covered in dust, it may activate the alarm. If too much dust or grime builds up, the dust can cause the alarm not to function at all. Clean the detector at least once a month with a hand-held vacuum to prolong the life of the smoke detector.