Air Purifier Keep Shutting Off: How To Fix

Frequent automatic shut-offs can be both bothersome and concerning for air purifier owners. This is because the shut-off function is usually only activated if there is a problem with the device.

In this article, we will discuss the possible reasons why an Air Purifier Keep Shutting Off by itself.

Possible Factors Air Purifier Keep Shutting Off

Air Purifier Keep Shutting Off

Dirty air filters:
Over time, air filters can become clogged with dust and other particles, which can cause the device to overheat and shut off. Cleaning or replacing the filters regularly can prevent this from happening.
Frequent automatic shut-off of an air purifier may be due to the accumulation of excessive debris, which can damage the wires and filter of the purifier.

Malfunctioning power source: If the power source is not providing consistent and stable power to the device, it may cause it to shut off. Try plugging the device into a different outlet or using a voltage stabilizer to see if this resolves the issue.

Sensor issues: Most air purifiers have sensors that detect the level of air pollution in the room and adjust the device accordingly. If these sensors are malfunction or blocked, the device may shut off. Clean the sensor area and make sure it is unobstructed.

Overheating: If the air purifier is placed in a confined space or near heat sources, it may overheat and shut off. Ensure the device is placed in a well-ventilated area.

Defective parts or Physical damage
Did you know that physical damage to the air purifier could be a common reason for it to turn off automatically? The wiring may be damaged due to a circuit breaker tripping, which can cause the purifier to shut off.

If you suspect physical damage to be the reason, it’s best not to keep the purifier on for too long and call a technician for repairs.

Old Air purifier
If your air purifier is old, it may be the reason why it keeps turning off frequently. Over time, the functions and controls of the purifier can become unreliable, leading to automatic shut-offs.

To determine if this is the issue, try pressing the buttons on the purifier multiple times and check if it has a warranty that may cover repairs or replacements.

How to Fix the Issues of an Air Purifier?

After identifying the potential causes of the problem, it’s time to explore possible solutions. You don’t always have to take your purifier to a repair shop; sometimes, you can fix it yourself with just a few simple steps at home. In the following section, we will discuss some of these DIY fixes that require minimal tools.

If your air purifier keeps turning off frequently, there are some quick fixes that you can try at home without needing to take it to a local shop. Here are a few:

  • Keep it clean: If too much debris is causing the problem, try cleaning your purifier. It’s recommended to clean it once every few months.
  • Replace the filter: Sometimes cleaning may not be enough, and your filter might need to be replaced, especially if it has a lifespan of 4-6 months.
  • Check your circuit connection: Make sure you are using the right power and voltage outlet for your air purifier.
  • Replace the purifier: If none of the above works, it may be time to replace the purifier altogether.


Like all devices, air purifiers may experience issues from time to time, but with proper attention and effort, these problems can usually be resolved. By identifying the underlying cause, you can easily fix the issue. Hopefully, after reading this article, you have identified the cause of your air purifier’s frequent shut-offs and can now take the necessary steps to resolve the issue.

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The author is an Air purifier expert with overall knowledge of air and ionizers.