Written by Mascha

Why does my smoke alarm go off without a reason?

In some cases, a smoke detector goes off frequently while there isn't any smoke to be seen. A false alarm can have several causes. In this article, we'll give you a number of tips to check why your smoke detector gives a false alarm.

Tip 1: hang the detector in the right place

Place smoke detector

A lot of smoke detectors falsely go off when they're mounted near a damp place or hanging close to appliances that produce combustion particles. It's important that you place the detector at least 3 meters away from the bathroom and kitchen. Only heat detectors are suitable for these areas. Make sure the smoke detector is no less than 6 meters removed from heaters, boilers, or ovens. It's also wise to place your smoke detector at a 1-meter distance from any lamps and windows that open.

Tip 2: check the detector chamber for dust

Cleaning a smoke detector

Dust on the inside of a smoke detector makes the sensor more sensitive. Smoke detectors use an infrared sensor to detect smoke. This sensor can't tell the difference between smoke and a layer of dust. That way, dust build-up can cause the alarm to go off when nothing is happening. A spider in the detector chamber may also cause a false alarm. Clean the smoke detectors in your home every month using a vacuum and a cloth.

Tip 3: replace the batteries or the smoke detector

If the tips described above don't achieve the right result, the smoke detector is perhaps almost empty or broken. A lot of smoke detectors give a signal in case of a technical issue. If possible, replace the batteries of the smoke detector. Still no success? The smoke detector itself is in need of replacement. If the detector has an integrated battery that is empty, you also need to replace the smoke detector with a new one.

Tip 4: resolve any issues with other signals

Other signals

Sometimes, a smoke detector doesn't give a false alarm but a different beep. Depending on the type of smoke detector you have, this can indicate different things. Some smoke detectors automatically give a signal if there is dust near the sensor, for example. Other detectors beep if the battery isn't properly inserted. In the article below, we'll explain what the best approach is in these situations:

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Article by:
Mascha Smoke detector Expert

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