Protect FAQs
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Protect Information

To help you get the benefits of clean air throughout your room, Protect's patent-pending air outlets are uniquely engineered to deliver 360°, omni directional airflow - quickly circulating moreA clean air to every cornerB of the room – so you breathe clean air wherever you are.   


A - HEPASilent™ technology combines mechanical and electrostatic filtration to provide a higher particle Clean Air Delivery Rate (pCADR) than conventional methods of only using mechanical filtration (at the same rpm on the fan and energy consumption of 18.3W). Based on particle CADR tests according to GB/T18801-2015 standard.
B - Based on the recommended room size of 38 m² (418 ft²) for 7400 series and 62 m² (674 ft²) for 7700 series.

  • Vacuum the outside of the air purifier regularly, especially the air inlets, outlets and the inlet for the air quality sensor.
  • Remove and clean the two pre-filters with a dust cloth or by using the soft brush of a vacuum cleaner.
  • When the filter change indicator appears on the air purifier and/or in the Blueair app, replace the filter with a new genuine Blueair SmartFilter. 


See detailed instructions in the user manual.

This air purifier should be disposed or recycled as electrical waste and the filter may be recycled as plastic. If you have questions regarding the disposal and recycling of this air purifier, please contact your local recycling facility for availability or Blueair dealer and ask for the correct method of recycling.

All Blueair air purifiers are meant to be used in the country of purchase. If you purchase an air purifier and then move to another country, here is what to keep in mind:  


  • Frequency and voltage requirements may differ from one country to another.
  • The regulatory requirements for product safety and radio frequencies might differ from one country to another.
  • Warranty enquiries are always handled by the resellers, the dealers, the shop or the local distributor in the country of purchase.

Fine Particles

The Blueair air purifiers remove fine particles like PM2.5, dust, pollen, mold, smoke particles and pet dander that can cause and exacerbate allergies.



Removed by Blueair air purifiers. Microplastics are defined as particles 5mm – 0.1 micron in size.



The HealthProtect™ air purifiers use HEPASilent Ultra™ filtration technology to remove up to 99.99% of the 12 most concerning viruses from the air. *

*Based on third-party testing, using GB/T18801-2015 test standards on airborne viruses and bacteria (EV71, H1N1, Staphylococcus albus, Staphylococcus aureus, Escherichia coli, Serratia marcescens, Candida albicans, Bacillus subtilis, Pseudomonas aeruginosa, Klebsiella pneumoniae and Beta hemolytic streptococcus). Blueair air purifiers have not been tested against Coronavirus, and Blueair does not claim to capture, remove, or kill 2019-nCoV.


Volatile Organic Compounds (VOCs) and odors

Blueair air purifiers help reducing VOCs and annoying household odors.

GermShield™️ technology proactively monitors room conditions on standby and automatically activates to kill germs and prevent the growth of bacteria on the filter when germ-prone conditions are present.


a. How to use the GermShield™ function?

When using the air purifier for the first time, the GermShield function is ON by default. You have the option to switch it OFF manually on your air purifier or via the Blueair app. When GermShield is ON, it will operate automatically when necessary, even when the air purifier is switched off.  


b. How does the Germshield™ function work?

The GermShield™ technology proactively monitors the air in the room to assess if the room is prone to germ growth. When the device senses germ-prone conditions, GermShield starts operating by using a low air draft and plasma charging (releasing a negative charge inside the air purifier) to kill viruses and bacteria* on the filters and ensure no new growth of germs. 


*Deactivation of bacteria (Staphylococcus Albus) and virus (MS2 bacteriophage). Blueair air purifiers have not been tested against Coronavirus, and Blueair does not claim to capture, remove, or kill SARS-CoV-2.

Particulate Matter (PM)

The sensors can detect particulate matter, which is a mixture of solid particles and liquids droplets found in the air. Particles of different sizes are detected by the sensors:


  • PM10 are particles with diameter of 10 micrometres and smaller. Examples of PM10: pollen, dust (settling dust, cement dust) and mold spores.


  • PM2.5 are particles with a diameter of 2.5 micrometres and smaller (human hair is approximately 70 micrometres in diameter). Example of PM2.5: house dust, animal dander, bacteria, cooking oil smoke/grease, smog, fly ash and settling dust.


  • PM1 are particles with a diameter of 1 micrometre and smaller. Example of PM1 (from 0.3 to 1 micrometre): Bacteria, suspended dust, house dust, animal dander, smog, tobacco smoke and soot.


Total Volatile Organic Compounds (tVOCs)

Volatile organic compounds (VOCs) are gases and odors emitted from different chemicals. VOCs can be found in the air in your home and are released by cleaning products, cosmetics, carpeting, furniture, air fresheners and many other consumer products. The sensors in the air purifier calculate the Total Volatile Organic Compounds (tVOC), which is the total concentration of all VOCs in the air. It is used to give an indication of the VOC levels.


Common VOCs sources:

  • Gasoline, industrial chemicals (Benzene).
  • Solvents (Toluene, xylene and perchloroethylene).
  • Burning fuel, gasoline, wood, coal, natural gas.
  • Paints, glues.

It is not recommended to clean the main filter in any way. Vacuuming or washing this filter with water could damage the filter media and decrease the performance.

If you have an issue with your product, please contact your local Blueair retailer from which you purchased the item. To contact Blueair for personalized support, please visit and click on Support to access all the ways to contact the closest Customer Support team.

Yes. When the air purifier is offline, the air purifier detects and displays the air quality levels on the device.
  • Three airflow speeds.
  • Automode.
  • Germshield™.
  • Control and features with Blueair app (see WiFi and Blueair app FAQ for more information). 
  • Indoor air quality indications on the air purifier.
  • Filter change indicator.

The Blueair Limited Warranty applies only if the air purifier is installed, used and maintained according to the instructions in the user manual.


Warranty and returns: If you purchased the air purifier at one of our authorized retailers, please contact the same store to request assistance.

Using a filter which is filled with dust or saturated with odors will not bring dangerous components to your home. But if the filter is full, it may be difficult for the clean air to come out and it might damage the air purifier in the long run. For best results and to guarantee a valid warranty*, we recommend changing the filters according to the indications.


*The Blueair Limited Warranty applies only if the air purifier is installed, used, and maintained according to the instructions in the user manual.

A specific Blueair SmartFilter is available for the specific HealthProtect™ model. The SmartFilter exists in several sizes depending on the model of air purifier.  


The Blueair SmartFilter consists of two filters attached by a strap at the top to make it possible to fold them over like a booklet to keep dust and pollutants from escaping.  Each filter has a particle filter layer and activated carbon layer to remove gas, odors, smoke, VOCs, exhaust, smog, and chemicals from the air. The SmartFilter is equipped with a smart RFID chip to accurately monitor the filter status and automatically reset the filter replacement indicator when a new filter is installed.


The HealthProtect™ air purifiers also have two pre-filters that can easily be cleaned with a dust cloth or by using the soft brush of a vacuum cleaner.

The cardboard is part of the filter and ensures that there is no air leakage. The efficiency of the filter may decrease if the cardboard has been removed or is damaged. If you have any doubts about the state of your filter, please contact your local Customer Support team.

Selecting Auto mode means that your Protect air purifier will automatically adjust when pollution levels creep up. With stepless, variable-speed operation, the fan increases smoothly to the right speed based on the sensor readings and slows down when the air is clean again. This ensures that your air purifier is always running at the perfect speed needed to maintain the purity of the air in your home.



  • The Auto mode can be triggered by the particle levels only (default setting) or by the particle and tVOCs levels (set in the Blueair app).
  • When you manually select fan settings, the Auto mode will be deactivated. To switch it on again, simply press the Auto mode button on your air purifier or via the Blueair app. 
  • The Auto mode works even when the WiFi is not activated or if the air purifier is disconnected from WiFi. The device can store the air quality measurements for a limited amount of time in case the WiFi connection is lost temporarily.

The air purifier accurately indicates when the filter needs to be changed. The filter lifetime is calculated with a smart algorithm (patent-pending) and based on the particle levels in the room and the airflow during the time the filter has been used. The filter lifetime status can also be monitored in the Blueair app. You should expect a filter lifetime of maximum 1 year.

Yes. When the air purifier is offline, the air purifier still detects and displays the air quality levels on the device.

Once connected to the Blueair app, select your HealthProtect model. Navigate to ‘Product Settings’ and use the ‘LED Brightness’ bar to adjust the brightness from 0-100%.

HEPASilent Ultra™ is Blueair’s most advanced filtration technology ever. Every component is uniquely designed in Sweden to provide the maximum performance and energy efficiency. This patent-pending technology combines electrostatic and mechanical filtration to remove 99.97% of viruses and bacteriaA, dust, pollen, dander and moldB, and eliminate VOCs, and odors. Once caught in the filter, this unique technology then kills 99%C of germs. HEPASilent Ultra™ delivers 50% more clean airD, uses 55% less energy and has a 10% lower noise than traditional true HEPA filtrationE.


A - Based on third-party testing, using GB/T18801-2015 test standards on airborne viruses and bacteria (H1N1, Staphylococcus aureus, and Escherichia coli).                                                                                                                                              
B - Based on third-party testing of removal rate of fine particles according to GB/T18801-2015 standard and pollen removal rate according to AHAM AC/1-2019 standard.
C- Deactivation of germs on natural flora (excluding viruses).
D - Based on testing of particle Clean Air Delivery Rate (pCADR according to GB/T18801-2015) in Protect 7400 model at the same fan speed, compared to using H13 true HEPA filtration in the same unit.
E - Based on testing of energy consumption (W) and noise levels (dB, according to ISO 3743) in Protect 7400 model with the same particle Clean Air Delivery Rate (pCADR according to GB/T18801-2015), compared to using H13 true HEPA filter in the same unit.


If your air purifier doesn’t switch on, try this:  

- Most Blueair models have a detachable plug that can slip out when you move the unit.  Place the unit on its side and push the plug back into the socket at the bottom of the unit. 

-Make sure that the filter of your air purifier is correctly inserted and that the door of the air purifier is closed.   

-Unplug the unit from the electrical outlet and plug it back in again. 

-Plug the unit into another electrical outlet. 

-Check the power cord. If it is damaged in any way, unplug it immediately. Contact your local Blueair team to learn about getting a replacement or repair.

-Make sure that you have selected a speed level to start cleaning the air.   

-If you are using a remote control, make sure that the battery is charged. If it isn’t, replace the battery.

If your air purifier still doesn't start, please contact the retailer where you bought the unit.

Make sure that you removed the plastic cover from the filter (not applicable to all models and filters). 

Make sure that nothing blocks the air inlet and outlet. 

Make sure that no object or dust is clogged around the filter. If there is, remove the filter and clean the purifier with a vacuum cleaner. 

Remove the filter(s) to see if it is causing the noise: 

1. Turn off your air purifier and unplug it. 

2. Remove the filter(s). 

3. Plug in the unit and turn it on. If the noise disappears, install a new filter. If the noise is still there, please contact the retailer where you bought the air purifier. They will help you according to their warranty conditions

First few times you use your air purifier:
As any new device, an air purifier can release a ’newness’ smell. Don't worry, this odor is not dangerous or toxic! Run your air purifier non-stop for a few days and odor should dissipate.

For optimal use, keep the air purifier on at all times. It uses less energy than a low-energy light bulb.

Time to change the filter:
A dirty filter can release a dusty smell. Filters absorb odors from, for example, cooking. To avoid this, always replace the filter when indicated.

Your device has lost its Wi-Fi connection temporarily. 

If you haven’t changed any the Wi-Fi settings on your router, the device should be able to reconnect by itself within a few minutes. 

If necessary, try the following troubleshooting tips to reconnect the device:

  -  If you changed a Wi-Fi setting on your router, you must update your app with these settings. Tap ‘+’ in the top right corner of the app and re-add your device.

  - Unplug and plug the router. 

  -  Make sure that VPN is off and that you are not using Firewalls (for more information about, check below the Wi-Fi network requirements: 'What Wi-Fi does Blueair smart products support?').

  -  Place the device closer to the router. 

  -  Check to see if the Wi-Fi is busy with other devices.

What Wi-Fi does your Blueair product support?

2.4 GHz standard Wi-Fi access point (b, g or n).    

All standard signal encryptions: WEP, WPA, WPA2, TKIP, AES.     

Un-encrypted wireless connections (i.e. Open) Please note: Professional versions of the protocols which require a certificate are not supported. This can be the case for company networks.     

Captive portals are not supported. This is when you need to enter a username and password to access Internet, such as in airports or public places.    

Access point that broadcasts multiple SSIDs networks or on multiple channels simultaneously may create problems of data packets being lost. This is especially the case in pairing products to the app.     

Make sure that no firewall blocks outgoing connections (blocking inbound connections is OK) or any restrictions on protocols such as http/https or sockets.    

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