Blue Air purifier Red Light? (Here is how to Fix it)

Blue Air purifier Red Light issue? If you are using Blue Air purifiers, then you have probably encountered the dreaded Red Light of Death error that happens when the HEPA filter of your air cleaner gets blocked and needs to be cleaned or replaced (usually after about 1–2 years of use).

This short article will explain what causes this issue and how to prevent it from happening again in the future.

What does Red light mean on Blue Air Purifier?

What does Red light mean on Blue Air Purifier?

Well, before we move on to the solutions, you must know the exact reasons why this could happen and whether you should worry about it or not!

There are several potential causes for the red light to appear on the Blue air purifier. The most typical reason is that the filter is filthy or completely broken. It could also indicate that the device becomes overheated and needs to cool off well before continuing to work.

However, these are the primary reasons your blue air purifier can display a red light.

  • The filter needs to be cleaned.
  • The filter needs to be replaced.
  • The air purifier is not properly vented.
  • The air purifier is overworked.
  • The air purifier is not properly maintained.

How to fix Blue Air Purifier Red Light Issue?

In short: To troubleshoot red light issue on your Blue Air purifier, first check the filter. If the filter is dirty/broken, clean it/replace it. But if the red light still won’t turn off after cleaning or replacing the filter, press and hold the main (in some cases “filter”) button for 10 seconds. After then, your problem should be fixed!

I will explain those ways in detail so that you can quickly fix this issue without any trouble. But before that, look at the bellow table for a better understanding…

Reasons Solutions
Clogged Filter Clean the Filter
Overheated Circuit Let the device cool
Broken Filter Replace the Filter
Software glitch Reset your device

Best Seller

Genuine Blue Air Purifier Filter

Rating 9.9/10

A clogged or broken filter is the most common reason for this red light issue on your Blue Air purifier. If cleaning the filter doesn’t fix your problem, replace the main filter.

Check at Amazon

Step 1: Clean the Pre-filter

how to clean blue air purifier filter

According to the Times of India, a clogged or damaged filter might cause an air purifier to stop functioning or to start behaving incorrectly. Although there are other potential causes for why it can stop working, a damaged or clogged filter is the big culprit.

So, before you do anything else, try cleaning the pre-filter of your Purifier. To clean the Blue Air purifier pre-filter, follow the steps shown in the above picture.

Clean the pre-filter regularly for optimal performance. Vacuum the exterior of the fabric pre-filter with a soft brush attachment to remove dust. If the pre-filter has to be cleaned more thoroughly, wash it in the washing machine on a gentle, low-temperature cycle.

Step 2: Power cycle your Blue Air Purifier

reset blue air purifier

You have just cleaned the filter or even replaced the old one with a new one, but your Blue Air purifier still displays the red light! What could be the issue?

OK relax! First of all, you don’t need to worry about it. It’s just a software glitch in your device and can be easily fixed through a reset.

So to reset your Blue Air purifier, follow the below steps:

  1. Turn on the device.
  2. You will see the filter indicator shining red. Don’t worry!
  3. Now press and hold the main (in some cases “filter”) button for about 10 seconds.

After 10 seconds, the red light will stop shining and turn white. Now continue using your device.

Step 3: Let the device cool down

blue air purfier red light fixing guide

This issue can also happen when your air purifier gets too hot. Overheating is such a threat that it might affect not only the functionality of your air purifier but also cause irreparable damage.

Your air purifier can become overheated by several factors, including a faulty power source, malfunctioning internal components, and filter obstruction. But not all models meet these criteria. Most of them include a built-in safety feature that activates if your Purifier runs too long or gets too hot.

However, if the “clean filter” indicator is still flashing after resetting the device, check whether the machine is overheated or not. Let the device cool down for at least 60 minutes if it is. After then, turn on your and your problem should be solved!

Step 4: Replace the Filter

blue air purifier flashing red light

When was the last time you changed the filter on your Blue Air purifier? Did you change the filter within the last six months? I am sure you haven’t changed its filter in the last six months.

But did you know that Blue suggests that users should change the filter every 5-6 months? According to Blueair, you should be serious about the filter and must replace the filter at least two times a year to get optimal functionality.

So as a last option, try replacing the filter with a new one. Follow the below video guide to replace your Blue air Purifier filter.

Use only genuine Blue air filters compatible with your model to ensure optimal performance and efficiency.


Q. Nothing worked! Still, my Blue Air Purifier is showing red light!

If none of the above methods work for you and your Blue Air purifier still displays red light, you should contact Blueair customer care for further assistance.

But if the warranty of your device is invalid, visit your nearest electronics repair shop and ask them to look into it. Hopefully, they will help you to fix the issue!

Q. How often should I clean my Blue Air purifier filter?

If you have pets or live in a dusty area, you may need to clean your Blue air purifier filter more often than the recommended one every two to four weeks.

However, if neither of these applies to you, the general rule is to clean your filter every two months.

5 Best Shows on Netflix You’ll be Addicted to Right Now! 2022’s Best Speaker Brands: Find Out Which Ones Are Worth Your Money 2022’s Best Home Security Systems: Protect Your Home Like a Pro 10 Energy-Saving Smart Home Gadgets You Didn’t Know You Needed These Smart Devices Will Simplify Your Baby’s Bedtime Routine