Blue Air Purifier Red Light Meaning, Is There Something Wrong?

The modern and latest air purifiers come with smart features specifically indicators that keep you updated with the air quality as well as the filter’s health. Speaking of famous air purifiers, Blueair is one of them, offering indications through different lights. In case the Blue air purifier red light is blinking or constantly flashing, it does not mean that your device is malfunctioning. It is representing something. What is it? continue to find out.

Blue Air Purifier Red Light Meaning

If your BlueAir Purifier is indicating red light there is nothing to worry about. It is its feature that indicates different things. This could happen probably because of two reasons, either the filters need to reset or it is notifying about the bad air quality. This depends on the different models of BlueAir Air purifiers.

What is the Red Light on an Air purifier?

Red light represents different issues for different units. However, in the majority of cases, it is notifying that your air purifier needs maintenance. Here is the troubleshooting technique to get the red light fixed.

Blue Air Purifier Red Light

Troubleshooting of red light for air purifier

As the air purifier features a different design, the troubleshooting steps for every design will be separate. However, a universal trick can work for every air purifier which is

Checking the air purifier filter

One of the main reasons that can make your air purifier blink red light would be the clogged filters. This occurs when the filters of your air purifier have been changed for a long time. Due to this, the filters are clogged with fiber, hair, dust, pet dander, and other impurities, requiring an immediate filter replacement.

Note that many of the air purifying units including BLUEAIR uses HEPA filter and they require a regular replacement every 6 months.

However, it is important to clean them every month. If the unit uses washable filters, simply wash them with running water and mild soap. In case they are non-washable, use a damp cloth or soft bristle brush to remove dirt and dust from the filter.

Red light is indicated when there is a need for a filter replacement but do not get confused with the red and orange light. Before turning red, an orange light will flash to let the user know that the air purifier is near to maintenance.

If the orange light is ignored in the first place then the unit will begin to flash red right.

How to fix Blueair air purifier red light?

As of now, it has been cleared that the filter replacement is the core reason behind your air purifier flashing a red right. So, that means you either need to clean it or if a period of 6 months has been complete, it needs to be changed.

However, if you are having replaced or cleaned the filter and still the red light is not going away, here is what you need to do.

Press and hold the reset button for a minimum of 5 seconds. Right after a beep, the light will turn from red to blue. The blue light flashing is a sign that your air purifier reset is successful and ready to work in its optimal state.

Blue Air Purifier Popular Products

As Blueair does not need any introduction and has a lot of quality products namely

And many more, however, if you are looking for an air purifier best budget air purifier, or the best air purifier for large room, here are our recommended products

Our recommended Blueair Air Purifier

1.   Blueair air purifier for home, larger room 211+ | Best Air purifier for large room

Blueair air purifier for home, larger room 211+


Product Specification

  • Dimensions: 13 x 13 x 20.4 inches
  • Weight: 13 lbs.
  • Filter type: Pre-Filters
  • Coverage: 540 ft²
  • CADR: 350 cfm

It is easy to use, a simple device that works with one pat, saying it is a one-touch device would not be wrong. This comes with an easily adjustable fan speed that minimizes itself to ensure clean air as well as uninterrupted sleep.

It possesses HEPA filters which efficiently clean the area up to 540 sq. ft. in not more than 12.5 minutes and an area of 2592 sq. ft. in one hour.

This air purifier is quiet at 31dB and consumes less energy around 30W and efficiently combats the impurities present in the air. You can also use it for smoke along with other airborne particles.

What we Liked about BlueAir 211+, Pros

  • 3-part filtration system for optimal air cleaning
  • The pre-filter fabric is washable
  • Easily blends in with the material
  • Good option for the rooms with 400 to 600 sq. ft.

What we disliked about BlueAire 211+, Cons

  • It is pricier than the standard air purifiers
  • Filter replacement would be expensive
  • It would be noisier on a high setting

2.    BlueAir Air purifier 411 | Best Budget Air Purifer


Product Specification

  • Dimensions: 7.9 x 7.9 x 16.7 inches
  • Weight: 6.09 lbs.
  • Filter type: Pre-Filters
  • Coverage: 190 ft²
  • CADR: 123 cfm

This Blueair air purifier is among the best sellers by the company as it is because of its pricing, available in a variety of colors. It has a three-stage filtration including pre-filter, HEPA, and activated carbon.

This model is among the smallest air purifier yet offers optimal functioning with 105 CADR that helps to clean small rooms effortlessly.

The power consumption of this model is not more than 10W and is another quiet operating device with a maximum of 46 dB.

If you are looking for this air purifier for multiple rooms or a single large room then probably you need more than one only if you are getting this model.  

What we liked about BlueAir 411, Pros

  • It has a great CADR as a small air purifier
  • One of the quietest air purifiers

What we disliked about BlueAir 411, cons

  • Not recommended for large rooms

Frequently Asked Questions | Best BlueAir Purifier

1.    How do I turn off Blueair WI-Fi?

To turn off WiFi on Blueair, you need to press the filter button and the Wi-Fi button at the same time for three to five seconds. It will be turned off.

If you want to turn it on back, press the filter button and Wi-fi button for three seconds, and the light will turn on, notifying you that the Blueair is ready for Wi-Fi.

2.    How do I reset the filter timer on my Blueair purifier friend?

You may experience a filter replacement indication for six months of continual use. The user will get to know about it as the light of the filter will turn orange and you will get the notification on the Blueair purifier friend app.

To reset the blueair classic series filter timer, switch on the unit. The next step is to press the filter replacement button and hold it for 10 seconds. This way, the light will disappear.

3.    How do I reset my Blueair 311+ filter?

 To reset your Blueair 311+ filter air purifier here is how you can do it. you have to press the touch button for a minimum of 7 seconds to reset the filter replacement timer. This will help your device to detect that the filters have been replaced.

It will flash for a minimum of four seconds, turn red, and then will back to white light.

4.    Can I leave the Blueair air purifier on all the time?

To get the optimal level of performance from the Blueair air purifier, it is designed to serve 24 hours and 7 days a week and is made to be a low-power-consuming device. So, yes, you can. However, it is not recommended though unless the air quality in your surroundings is extremely unhealthy.

5.    Which is the best place to put my Blueair air purifier?

The best place to put your air purifier is near the windows, doors, or areas where the airflow and ventilation are good. This way, your device will filter the dust, pollens, or any irritants present in the air.

Remember, do not install your air purifier behind your TV, corners, sofa, or any other furniture item as it will minimize the working of your unit, making it a high maintaining device.


Blueair air purifier has been a companion for a long time with its quality air cleaning devices with their top-notch features. However, the light indicator is a great feature to keep the user updated but it can annoy when that little light begins to blink. In this blog, we have mentioned the possible reason for that along with its quick fix. Hope this guide will be a great help to you to maintain your Blueair purifier long-lasting.

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