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3_Trouble Shooting with Smoke Detectors

Updated on May 6, 2021 by Sydney Williams

Once you buy smoke detectors, it’s very essential to maintain them for proper functioning and to increase their longevity. In this blog, we’re going to walk you through some of the common questions and maintenance tips. If you’re confused regarding the type of smoke detectors you should go for, I suggest you read my article ‘Smoke Detectors- Wired Vs. Wireless’ for in-depth information and guidance.

How Long do Smoke Detectors Last?

When you replace the batteries in your detectors, it’s crucial for you to check its age too. Most Detectors have a life span of 10 years. After this span, it’s integral to replace the unit. For wireless variants, you just need a screwdriver for replacement. For a hardwired one, it’s recommended to get the replacement done by a technician.  Despite all of these, it is always recommended to periodically check your Smoke Detector so ensure that it is not malfunctioning.

Why do Smoke Detectors only Last for Ten Years?

Every appliance has a life, after which it should be replaced to avoid malfunctioning. As per the majority of the manufacturers, the limit for Smoke Detectors is 10 years This is because as they get old, their operation gets hampered due to dust, build up and other contaminants. For hardwired ones, it’s also crucial to check the wiring as even if the appliance is working perfectly, sometimes the wiring might not. An inefficient operation can cause slow detection of fire and might not be functional in preventing emergencies.

How do you know if a Smoke Detectors is Going Bad?

Being extra-sensitive and producing loud noises can be the two major hints of Smoke Detectors gone bad. An extra-sensitive detector may give false alarms, which is a bad sign and should be sufficient to alert you to change it.  False Alarms indicate a faulty sensor. If your Smoke Detectors are gone bad and you are looking for a replacement, take a look at my blog, ‘Smoke Detectors-A Complete Buying Guide’. Even though you had a Smoke Detector and probably you know all about it, but with changing times, new detectors are being developed and this guide can help you select a suitable one.

How do you Stop a Hardwired Smoke Detectors from Beeping?

There could be various reasons why Smoke Detectors beep continuously. A dead backup battery, dust accumulation or old sensor could be possible culprits. If the backup battery has run out, replacing it can stop beeping. Cleaning the detector with a vacuum might prevent false alarms too.

For battery-powered ones, removing the battery and checking its condition is a good option.

Why does my Smoke Detector keep Beeping Without Battery or Even After I Change the Battery?

The dust and debris build-up are mostly responsible for such a situation. Cobwebs and insects can also be responsible for the malfunctioning. Try blowing some air using your hairdryer or vacuum cleaner to remove the debris.

If you’ve tried everything mentioned above and replaced your batteries as well the beeping should stop. If it doesn’t then it could be a small error in the mechanism and can be rectified by resetting your alarm.

How to Change the Smoke Detector Battery?

Changing the battery is a simple process and can be done in a matter of minutes. Repeat the following steps to change it:

  • Remove the cover as per your detector’s design. A simple twist can remove most covers, while others might require screwdrivers.
  • Matching the positive and negative terminal, replace the battery and install a new one.
  • Just to make sure everything is running normally, run a test.


Smoke Detectors are appliances and sometimes they tend to malfunction. However, most of the times it is because of minute and small issues that such problems occur. This is where such questions will come handly. Fortunately, most Detectors last their life without any issues but if you have been encountering any problem recently, we hope this blog helps.

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