Smoke alarms are supposed to be your first line of defense in the event that there’s an uncontrolled fire in your home. That’s why they’re often one of the few working things required by local health and safety codes.

It’s when your fire alarm seems to continually go off for no reason that you have a real problem. Let’s examine why a fire alarm may continue to go off even when there is no fire present.


Replace the Batteries

The first thing that you should always try with a stubborn fire alarm that seems to continually go off is to replace the batteries. Old batteries or unreliable discount batteries may not hold enough of a charge, which in turn can trick the alarm into thinking that there’s smoke in the surrounding air.


Clean Dust-Covered Sensors

The good news is that your current fire alarm may still work perfectly fine, it’s just that the sensors have some dust in them.

Fire alarms work mainly by checking to see if there is a detectable level of ionization in the surrounding environment. If it’s too high, then the fire alarm triggers because it thinks there that is smoke caused by a fire.

If you have an ionization fire alarm, you’ll know because it says “I” somewhere on the unit. Depending on the age, it may reference a radioactive component used to detect ionization like Americium-241 somewhere on the package.

If this is the case, then you may be able to fix your fire alarm by taking a vacuum cleaner extension and sucking out the dust. Alternatively, you can use a can of compressed air to blow the dust out.


A Malfunctioning Unit

If your fire alarm seems to continually go off with no real reason as to why, then there’s a chance that your unit is simply malfunctioning.

Older fire alarm units are known to stop working after a while. They simply malfunction because they were only designed to work for 5 to 10 years instead of the 20 or more years that many people expect them to work reliably.

If this is the case, then it’s time to replace your fire alarm rather than to simply ignore it. There are a variety of different alarm systems in Singapore designed to replace aging or unreliable fire alarms. Their aim is to keep your home or your business safe with more reliable readings provided by more sensitive and accurate methods of detection.