Blue Air Purifier Red Light After Changing Filter? (Fixed)

It can be intimidating whenever you experience a Blue air purifier red light after changing filter.

After getting a brand new filter, you would expect any filter issues to be resolved. Yet a red light warning indicator won’t let your Blueair purifier work as intended. 

To fix your Blueair purifier receiving a red light, check if the filter is installed correctly and snapped in place. Next, clean the air intake and sensors to prevent errors and check for obstructions. 

Let’s first see the top causes of this issue before troubleshooting it.

Why Does My Blueair Purifier Have a Red Light After Changing Filter?

A red light indicator with Blueair purifiers gets triggered every six months of regular usage and signals you to replace the filter.

If the red light persists even after you directly address it, there is likely an issue with the filter installation, model, or device setup.

Here are the most common reasons for the Blueair purifier’s red light after changing the filter:

Now that you know what causes this color-coded warning message, let’s try solving these one by one!

How to Fix Blue Air Purifier Red Light After Changing Filter?

Tip: Verify that your Blueair purifier sits on an even and leveled flat surface; otherwise, it won't function properly.

1. Reset the Air Purifier

Sometimes, the red light is triggered by a software issue rather than a physical issue with your filter.

The quickest potential solution to a red light indicator is to perform a reset on your filter.

Here is how to perform a hard reset on your Blueair Purifier:

1. Turn off your Blueair purifier and unplug it from any power outlet.
2. Press and hold the power button for 10-15 seconds. 
3. This will clear any residual static charge and ensure your electronics don’t malfunction.
4. Plug the air purifier back in and turn it on.
5. Check if the red light is no longer present.

Note: Press and hold the red light button for 10 seconds and see if it turns off on its own.

2. Check for Proper Filter Installation

To fix a Blueair filter red light, you can start by checking if the filter is correctly installed.

In case it is not properly fitted, it can trigger a red light indicator because your purifier thinks there is no filter present. 

Here is how to check your filter for proper installation:

1. Turn off the Blue air purifier and unplug it.
2. Open the Blue air purifier and carefully check if the new filter is properly seated and aligned.
3. Reinstall the filter, ensuring it fits securely and snaps firmly or locks into the base.
4. Plug the Blueair purifier back in and turn it on.

Note: Ensure that any pre-filters or panels are also firmly secured so they don't trigger a false filter warning indicator.

3. Clean the Air Intake and Sensors

If your Blueair purifier intake or sensors are obstructed by anything, it can cause issues for your device to take in air.

When this happens, your Blueair might signal a red light to change the filter, as it detects lessened airflow.

Here is how to clean the air intake and sensors of your Blueair purifier:

1. Power down the air purifier and disconnect it from any power.
2. Remove the top half of the device or slide off any side or top panels to access the pre-filter or filter.
3. Remove the filter and clean the air intake area from dust or debris.
4. Clean the sensors using a soft, dry cloth.
5. Reinstall the clean filter and plug in the air purifier.

Tip: Regular cleaning of the air intake and sensors maintains the air purifier's efficiency.

4. Inspect for Obstructions

If your Blueair purifier is placed too close to any objects or furniture, it can impede its ability to filter air.

This might be then falsely interpreted as a faulty filter that is due for replacement.

To prevent this issue, you must ensure your Blueair is properly positioned.

Here is how to ensure your Blueair purifier is correctly set up:

1. Turn off your purifier device and unplug it.
2. Check for any obstructions in the air intake or exhaust vents.
3. Place the purifier at least 2-3 feet away from any wall or furniture.
4. Remove any visible blockages; if you have small kids or pets, ensure the purifier is out of reach.
5. Plug the Blue air purifier back in and power it on.

Note: Placing the air purifier in a room that is too large for it might impede its effectiveness.

5. Perform a Hard Reset

Sometimes, a more persistent software error can cause an incorrect filter replacement red warning light.

If simply power cycling your device won’t work, it’s best to perform a hard reset.

Note that the steps below could vary based on your Blueair purifier model.

Here is how to hard reset your Blueair purifier:

1. Turn off and unplug the air purifier device.
2. Hold the reset button (if available) for 30 seconds (usually on the main device panel).
3. Alternatively, press and hold the main power button for at least 15 seconds.
4. Plug the air purifier back in and turn it on.
5. Check if the red light has turned off.

A successful reset should come with a series of flashing lights or sounds to let you know the procedure has finished.

Note: A hard reset will erase any stored data on your device; ensure you have it backed up somewhere.

6. Check for Software Updates

Outdated Blueair firmware can cause software issues, such as falsely activated warning lights.

This can be fixed by ensuring that your Blueir application is running on the latest update possible. 

Here is how to ensure your Blueair software is up to date.

1. Turn off your Blue air purifier.
2. Visit the Blueair official website to check for any available updates for your specific air purifier model.
3. If updates are available, follow the provided instructions to update the firmware.
4. Plug the air purifier back in and turn it on.

After following the above steps, you must also ensure your Blueair app is up to date. Here are the steps to do so:

1. Take your primary device where the Blueair home app is installed and connect it to a WiFi network.
2. Go to Google Play or App Store, depending on your device manufacturer. 
3. Type and search for “Blueair” in the search field. 
4. Tap the button if you see a notification saying Update or Update Available next to the Blueair app.
5. After installing the latest version, sign in again to the Blueair app.
6. Ensure your Blueair purifier is paired to your mobile app so any updates can be installed.

Note: Note down your Blueair account credentials, as updating the app might leave you locked out.

7. Check the User Manual

If you have followed all of the steps in our guide, but your red light still flashes even after installing a new filter for your Blueair, it could be due to a hardware malfunction. 

As there are many different models of Blueair filters, it’s best to check the instruction manual for further possible solutions.

Contact the manufacturer’s customer support and explain the issue in detail as a last resort.

Note: Check with customer support if the replacement filter you bought is suitable and compatible with your Blueair purifier. 

Quick Recap

To fix the Blue air purifier red light after changing filter, first power cycle your device and check if the filter is properly seated.

Next, clean your Blueair intake vents and ensure no physical barriers or obstructions to airflow.

Lastly, perform a hard reset and consult with Blueair support if needed.