Are you facing a Blue air purifier red light issue and don’t know what this means and what to do? If so, you are at the right blog post. The red light turning on can be worrying as it can indicate serious problems with your device.
However, to get you out of this worrisome situation, I’ll discuss common causes behind this problem and a simple 5-step guide to get rid of them. Let’s get going!
A red light on the Blue air purifier indicates there may be an issue with the unit. However, you can quickly fix that with these steps:
- Cleaning the prefilter;
- Replace the old filter;
- Clean the purifier;
- Reset the unit.
However, the above steps are just the tip of the iceberg. You may have to change the purifier location as well as update the unit. Continue reading as I will uncover detailed troubleshooting steps and 6 additional helpful tips to eliminate that offensive red light in the following sections. Let’s dive into it!
Related Topic: Homedics Air Purifier Red Light: 4 Reasons and Best Fixes
An Insight Into the Blue Air Purifier Red Light
Blue air purifier gives red light which is a precautionary indicator that there is an issue with the device or the air quality. Some common red light culprits include the following:
- A dusty and clogged-up air filter;
- Blocked air vents trapping airflow;
- Faulty fan and motor;
- Malfunction in the sensors;
- Fussy electrical issues.
Determining the Filter Life
A filter on an air purifier usually lasts for 5-6 months. The following tips can help you keep track of the time when to replace the filter:
- Check the manufacturer’s guidelines: A company can best determine the life of a filter. You can also get help from the user manual.
- Look for an indicator sign: A red light is the strongest indicator of filter replacement. In some devices, the blue filter light turns yellow. This is also an indicator for filter swapping.
- Note any decrease in airflow – If you notice the airflow volume dropping, the filter is likely getting clogged and about to expire.
- Check for physical damage: Look for the signs of being worn out, heavy dust, and damage as these can end the life of a filter beforehand.
Understanding the Lights on Blueair Air Purifiers
Blue air purifiers have 2 different lights that show the current air quality status and the filter’s life progress. Let’s discover the details:
- Filter replacement light: Red light shows there is something wrong with the filter and it needs to be changed. Also, this indicator may glow yellow in some devices. This indicates that the filter is nearing the end of its service life.
- Air quality lights: In Blueair air purifiers addition to the red light, you may encounter lights, such as white, blue, green, yellow, and orange. These lights tell about the air quality or the normal operation of the unit.
For a better understanding of the air quality lights, let’s check out the table below.
The device is turned on
Excellent air quality
Good Air Quality
Moderate air quality or filter needs a replacement soon
Very polluted or filter needs immediate replacement
Important to note that not every model has both indicators. In fact, some models have only one light indicator. Check out the table below to find out the reason for the red light on your unit: poor air quality or the filter issue.
Filter Replacement Indicator
Air Quality Indicator
Yes. On the top panel
Yes. In front of the device
Yes. On the top panel
Blue Pure 121, Blue Pure 221
Yes. In front of the device
Yes. On the top panel
Yes. In front of the device
5 Steps Guide to Fix Blue Air Purifiers Red Light Issue?
Let’s have a look at this table to quickly understand the reason behind the red light and their solutions:
Scrubb the prefilter
Reset the device
The purifier is heated
Let it cool down for some time by taking out the plug
There is high pollution in the air
Change the location of the purifier or minimize the pollution source
Now that we have gone through the table, let’s discuss them in detail.
Materials and Tools Required
Before starting the work on the air purifier red light issue, it’s handy to have these supplies:
- Replacement filters;
- Small vacuum or duster;
- Outlet tester;
- Owner’s manual for unit-specific troubleshooting tips;
- Cloth and cleaning solution.
Step 1: Scrub the Pre-filter
The pre-filter catches large particles before they clog up the primary air filter. Therefore, it makes sense to clean the pre-filter. Follow the given steps:
- Unplug and turn off the unit;
- Remove the upper lid;
- Spot the pre-filter there and remove it;
- Look for the signs of dust and debris and scrub them with the help of the duster;
- Try vacuuming or washing with lukewarm the pre-filter to clear any significant buildup.
Step 2: Reset Your Blueair Air Purifier
If the light persists, it may be because of a technical glitch. Resetting the device can help you in this regard. Follow these points:
- Turn off the unit and unplug it from the outlet;
- Let it sit powered down for a minimum of 3-5 minutes;
- Power it again then hold the power button for 10 seconds.
If the red light turns to white, it indicates that the Blue air purifier has been reset, and it should now function without any problem.
Related Topic: Winix Air Purifier Red Light: 3 Causes and Easy Fixes
Step 3: Turn off the Unit for a While
Sometimes, if the device is working overtime to clean the air, its motor gets heated. The right approach, in this case, is to let the Blue air purifier have some rest. Follow these guidelines:
- Move it away from heat sources like sunny windows or warm electronics;
- Make sure nothing is blocking the vents of the device;
- Let the unit cool down for at least an hour before powering it on again.
Step 4: Swap Out the Main Filter
Once the unit is off, now it’s time to replace the filter. Here is how you can do this without any hassle:
- Confirm the filter usage over 6 months by checking the installation date marked on the frame;
- Remove the upper compartment;
- Take off the pre-filter;
- Remove the primary filter by pulling it outwards;
- Insert the new filter on the frame and set up the system.
If you are confused about what filter you should get for the unit, the following table can help:
Compatible with Units
Not Compatible with Units
Blue Pure 411 Particle + Carbon Filter
411, 411+, 411 Auto
Blue Pure 211+ Particle + Carbon Filter
Blue Pure 211+ Auto Particle + Carbon Filter
Blue Pure 311 Particle + Carbon Filter
311 Auto, 411 Auto, 411, 411
Blue Pure 311 Auto Particle + Carbon Filter
411 Auto, 411, 411+
Blue Pure 121 Particle + Carbon Filter
Blue Pure 121
Blue Pure 211+
Here is an easy video that takes you through the filter replacement process.
Step 5: Change the Location
If you have tried out everything mentioned above, the red light is still turning on, which could be an indication of high pollution in the air. In this case, relocating the device can help:
- Carefully unplug the unit;
- Transport it to a different side of the room in your home;
- Close the windows and doors while the purifier is operating;
- Restart the Blue air purifier to start the cleaning process.
Additional Helpful Measures To Tackle Red Light
If you’ve tried all the basic fixes, but the red light persists, don’t throw in the towel just yet. A few more advanced troubleshooting techniques may help you get to the root of the problem. Let’s learn about them:
1. Remove the Dust From the Sensor
Dust and debris on the optical air quality indicator/sensor can lead to the activation of the filter replacement indicator light. These steps can help you:
- Use compressed air or a soft brush to gently clean the sensor lens at the back of the purifier.
- Wipe it gently with a microfiber cloth dampened with rubbing alcohol. Be extremely careful not to press down on the delicate sensor.
2. Minimize the Pollution
If airborne irritants like smoke, chemicals, and allergens are overwhelming the purifier, you should adopt strategies for removing them. Follow these steps:
- Move litter boxes or ashtrays away from the unit.
- Decrease the exposure to smoking, pet danders, and hair.
3. Get a New Variant
Sometimes, a Blue air purifier is too small for the space, and it struggles to clean the air, leading to the red light problem. To avoid this problem, you need to upgrade the model.
Go for a model with higher CADR ratings and designed for large rooms such as Blueair Blue Pure 211+ Auto (353/347/380 CADR for smoke/dust/pollen).
4. Remove the Debris from Intake Vent
An air purifier has an intake vent that absorbs the air, which is then filtered and expelled from the top vent. If there is more debris in this compartment, it can also hinder the performance. Follow these steps to clean the intake vents:
- Use a vacuum cleaner to dislodge dust and debris inside the vent opening.
- Straighten out any kinks or bends in the intake tube.
5. Get the Help of a Professional
An electrical device like an air purifier can face complex internal problems beyond a layman’s understanding. These issues include:
- Electrical troubles;
- Wiring issues;
- Motor heating problems.
To troubleshoot issues like the above, it is suggested that you consult an appliance repair technician. They have specialized tools and expertise to target internal problems.
6. Contact the Company
If all the above troubleshooting fails to tackle the red light problem, it is time to approach the manufacturer. They can suggest whether to buy a new unit or repair the original one.
- Live chat: To get live chat support, go to the Blueair Air Purifier website;
- Contact Form: To use the company’s help desk services, use their contact form.
Related Topic: Levoit Air Purifier Red Light: 6 Easy Steps How to Fix It!
How do you know when to change the filter on a Blueair air purifier?
You should change the filter if the unit’s indicator light is red. Moreover, swapping the filter on the Blue air purifiers every 5-6 months is recommended.
How do you reset the red light on an air purifier?
Unplug the unit, then power it on and hold the filter light button for 10 seconds. This will reset the electrical components and air quality indicator light.
What does the red light mean on a purifier?
A red light on a Blue air purifier typically indicates some kind of issue detected, like a clogged filter, electrical problem, or overheating. The red light is a warning sign that the purifier needs troubleshooting.
The final say is Blue air purifier red light indicates that there is an issue with a unit and needs troubleshooting.
If the problem is with the filter, you can replace it. On the other hand, reset the device if the replacement of the filter/pre-filter doesn’t work. Similarly, if there is too much pollution in the room, it is suggested that you should minimize the pollution sources. Finally, upgrading the model can also be helpful if the red light is stubborn.
Nonetheless, using the company’s recommended carbon filters, cleaning the device, and maintaining the indoor air quality can prolong the cleaner’s life and your usage experience size.
Danny is a passionate writer who loves to share his knowledge about air purifiers. He’s been writing for 10 years, and he’ll share all that experience with Very Well Home viewers to help you make the best decision when it’s time to buy an appliance!