Blue Pure Blueair 311 Auto/411 Auto User Manual

Air Purifiers

Please read this user manual carefully and keep it for future reference. 

The latest version of this user manual can be found on 

Note: There may be local variations of these models. 

 Product name Regulatory model number
311 Auto3431101000 
411 Auto3231101000

Blue Pure 311 Auto/411 Auto 

Blue Pure air purifiers are available in two models. All models have a pre-filter and a  HEPASilentTM main filter to purify air. All Blue Pure models have control functions and a built in  sensor. 

The air purifier is mainly composed of a motor, a fan and filters. The air purifier removes  contaminants from the air in a room to improve indoor air quality. 

You can change the air purifier settings at any time, using the control panel on the air purifier 

Recommendations for best performance 

  • • Use the air purifier in a room that does not exceed the room size recommendation.
  • • Place the air purifier in a location where air can circulate freely in, out and around the air  purifier. 
  • • Do not place the air purifier closer than 10 cm (4 inches) to another object.
  • • During operation, keep doors and windows in the room with the air purifier closed.
  • • Only use original Blueair filters. 
  • • Change the main filter when the filter replacement indicator appears on the control  panel. 
  • • Follow the maintenance instructions in this user manual.

A Touch button

B Air outlet

C Air quality indicator

D Fan and motor

E Filter shelf ring

F Main filter (Particle + Carbon filter)

G Pre-filter 

H Air quality sensor

I Power cable (not in picture)

J User Manual (not in picture) 


Safety instructions 

Blue Pure 311 Auto/411 Auto air purifiers are electrical appliances for indoor use only, take the necessary precautions to reduce the risk of  fire, electric shock or injury. 

  • • This appliance is not intended for use by persons (including  children) with reduced physical, sensory or mental capabilities, or  lack of experience and knowledge, unless they have been given  supervision or instruction concerning use of the appliance by a  person responsible for their safety. 
  • • Supervise children to ensure that they do not play with the  appliance. 
  • • Cleaning and user maintenance shall not be made by children  without supervision. 
  • • Always disconnect the appliance from the power supply before  maintenance. 
  • • Do not attempt to open or service the appliance yourself. Service  must be done by the manufacturer, service agent or similarly  qualified personnel using only original Blueair spare parts. 
  • • Ensure that the power cable and the power plug are not at risk of  getting damaged. To avoid hazard, a damaged power cable must  always be replaced by the manufacturer, service agent or similarly qualified person.
  • • If the appliance is damaged or malfunctions, turn it off, disconnect  it from the power supply and contact Blueair.
  • • The power plug must be firmly inserted in the power socket.
  • • When disconnecting the unit from the power supply, do not pull on  the power cord, pull on the power plug.
  • • Use the power cable provided with your Blueair air purifier to plug  directly and firmly into an appropriate, electrical outlet.
  • • Do not use an extension cord or a power strip. Refer to the rating  label on your appliance.
  • • Do not alter the power plug in any way. If the plug does not fit into  the outlet, contact qualified personnel to install the proper outlet.
  • • Do not use the included power cord for anything else but the  appliance.
  • • Do not allow objects to enter or block the air inlets and air outlets as this can cause electric shock or damage the appliance.
  • • Do not place any objects on top of or directly against the  appliance.
  • • Do not sit on, stand, climb onto or hang from the appliance.
  • • Keep the appliance, including the power cable, at a safe distance  from heated surfaces and open fire.
  • • Keep the appliance and power plug away from water and other  liquids.
  • • Keep the appliance and power plug away from chemicals such as  pesticides and deodorants.
  • • Place the appliance on the floor. The appliance must be placed on  a stable surface.
  • • Do not use the appliance outdoors or in wet environments such as  bathrooms, laundry rooms or pool areas. 

Get started 

Step 1 

Plug the power cable  into a wall outlet. 

Step 2 

Press the button to  turn the air purifier  on and adjust the fan  speed mode. 

On/Off and fan speed controls

Available settings are: Auto, Night, Everyday, Boost and Off. 

The indicator lights on the touch button indicate the selected fan speed. The lights  automatically dim down completely 5 seconds after pressing the touch button, indicating a  deactivated fan speed control mode. Press the touch button once to reactivate on/off and  fan speed control. The indicator lights light up and you can adjust the fan speed mode again. 


The autostart feature automatically restarts the air purifier at the last set speed if it has  been unplugged, used with a power switch timer, or if a power failure occurs. 

Auto mode 

In auto mode the air purifier automatically controls the airflow based on air quality  information from the sensor.  

On/Auto mode 

Press once to turn the unit On and to set it to Auto mode.

Night mode 

Press twice to set to Night mode (low fan speed)

Everyday mode

Press three times to set to Everyday mode (medium fan speed).

Boost mode 

Press four times to set to Boost mode (high fan speed).


Press five times to turn the unit Off. 

Air quality information 

The air quality levels for particulate matter (PM) are indicated using a color scale on the air  quality indicator. The air quality indicator is completely dimmed in Night mode. 

PM2.5, Particulate matter, particles with diameter of size 2.5 micrometers or less. 

Air quality level (PM 2.5) 


The air purifier is delivered with a fabric pre-filter and a main filter. The filters purify the air  from both particles and gases. For best performance, clean the pre-filters regularly and  change the main filter when the air purifier indicates filter change. For best performance,  clean the pre-filters regularly and change the main filter when the air purifier indicates filter  change.  

To find the right main filter for your air purifier, use the Blueair app or visit  The model number of your air purifier can be found on the rating label on the air purifier. 

Important! Always turn off and disconnect the appliance from the power supply before  changing filters, cleaning or carrying out maintenance procedures.

Blueair filter subscription program 

Use the Blueair app or visit to sign up for the Blueair filter subscription  program. (Not available in all markets) 

Button control functions 

Change filter 

When the indicator  light turns red (after 6  months of operation)  you should change the  main filter. 

Filter replacement  indicator 

Press the button down  for 7 seconds to reset  the filter replacement  indicator.  

Clean and change the pre-filters 

For best performance, clean the pre-filter regularly. Vacuum the exterior of the fabric pre filter with a soft brush attachment to remove dust. If the pre-filter requires a deeper clean,  wash it on a gentle, low-temperature cycle in the washing machine. 

Important! Press the Velcro strips together on the pre-filter before machine wash. 

Step 1 

Turn the unit off and unplug  it. 

Step 2 

Carefully push the top  cylinder down while rotating  counterclockwise to unlock. 

Step 3 

Remove the top cylinder from  the unit. 

Step 4 

Open the pre-filter panel and  remove the pre-filter.

Step 5 

Wash the pre-filter in the  washing machine, according  to instructions on the pre filter´s label. 

Step 6 

Place the pre-filter back onto  the unit. 

Adjust the pre-filter and the  panel to hide the power cord  in the back. 

Step 7 

Carefully push the top cylinder down, at the same time rotating it clockwise to secure it back  into the lock.     

Step 8 

Plug in the unit. 

Change the main filter 

When changing the filter, vacuum any dust that may have accumulated inside the unit. 

Important! Use only original Blueair filters suitable for the model to ensure proper function  and performance of the air purifier, and to qualify for full warranty coverage. 

Step 1 

When the indicator light  glows red, it’s time to change  the main filter. 

Step 2 

Turn the unit off and unplug  it. 

Step 3 

Carefully push the top  cylinder down while rotating  counterclockwise to unlock. 

Step 4 

Remove the top cylinder  from the unit.

Step 5 

Open the pre-filter panel and  remove the pre-filter. 

Step 6 

Carefully remove the filter  shelf ring. 

Step 7 

Grip the filter handles and  pull upwards to remove the  main filter from the inner  structure. 

Step 8 

Position the new main filter  onto the inner structure.  The filter handles should  face upwards. 

Step 9 

Press the filter shelf ring  firmly into position above the  main filter. The filter shelf ring  protects the top edge of the  main filter from damage. 

Step 10 

Place the pre-filter back onto  the unit. 

Adjust the pre-filter and the  panel to hide the power cord  in the back. 

Step 11 

Carefully push the top  cylinder down while rotating  clockwise to secure the lock. 

Step 12 

Plug in the unit.

Step 13 

Press the touch button for  a duration of 7 seconds to  reset the filter replacement  timer.  

This lets the air purifier know  that you have changed the  filter.  

The indicator light flashes for  4 seconds, and then changes  from red to white. 

Care and maintenance 


  • • Disconnect the air purifier from the power supply before maintenance.
  • • Do not allow foreign objects to enter the air inlets or air outlets. This may cause electric  shock or damage the air purifier. 
  • • Never clean with gasoline, chemical solvents or corrosive materials as these agents may  damage the air purifier.  
  • • Make sure the air purifier is completely dry before connecting it to power.
  • • Do not wash the main filter. The main filter is not washable or reusable.  


  • • Wash the pre-filter according to the instructions on the pre-filter´s label or vacuum the pre filter with a soft brush attachment. 
  • • Wipe the exterior of the air purifier with a soft, clean, damp cloth.
  • • Clean and check the power cable and power plug for wear or damages.
  • • Clean the sensor when changing the main filter.

Clean the air quality sensor 

The inlet for the air quality sensor is located at the back of the air purifier.  Important! Do not use fingers or any unrecommended objects to clean inside the sensor inlet. 

Step 1 

Turn the unit off and unplug  it.

Step 2 

Carefully push the top  cylinder down while rotating  counterclockwise to unlock. 

Step 3 

Remove the top cylinder  from the unit. 

Step 4 

Press the button on the  inside of the unit to open  the lid covering the sensor  and remove the lid. 

Step 5 

Gently clean the sensor with  a cotton swab, and attach  the sensor lid 

Step 6 

Carefully push the top  cylinder down while rotating clockwise to  secure the lock.  

Step 7 

Plug in the unit. 

Disposal and recycling

This air purifier should be recycled as electronic waste and the filter recycled as plastic  according to local regulations. If you have questions regarding the disposal of this air purifier,  please contact your local authorities or Blueair dealer and ask for the correct method of  recycling. 

Help and support 

If you have questions about your product, please visit or contact your local  Blueair retailer. 

To contact Blueair for personalized support, please visit 


Warranty information 

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

For warranty conditions, please visit 

Warranty and returns 

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


 Blue Pure 311 AutoBlue Pure 411 Auto
Input Power, Frequency100-240V 50/60Hz 100-240V 50/60Hz
Power consumption/
Rated input power
3-35W 2-10W
Sound level (min/max)123-53 dB 18-48 dB
Recommended room size236 m2 (388 ft217 m2 (190 ft2)
CADR Smoke2250 cfm (425 m3/h) 123 cfm (210 m3/h)
CADR Dust2250 cfm (425 m3/h) 107 cfm (181 m3/h)
CADR Pollen2244 cfm (415 m3/h) 96 cfm (163 m3/h)

1 Sound pressure according to GB/T18801 and GB4214.1 

2According to ANSI/AHAM AC-1-2019

Regulatory information 

WARNING: Changes or modifications to this unit not expressly approved by the party responsible  for compliance could void the user’s authority to operate the equipment. 

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital  device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable  protection against harmful interference in a residential installation. This equipment generates,  uses and can radiate radio frequency energy and, if not installed and used in accordance with the  instructions, may cause harmful interference to radio communications. 

However, there is no guarantee that interference will not occur in a particular installation. If this  equipment does cause harmful interference to radio or television reception, which can be determined  by turning the equipment off and on, the user is encouraged to try to correct the interference by one or  more of the following measures: 

  • • Reorient or relocate the receiving antenna. 
  • • Increase the separation between the equipment and receiver. 
  • • Connect the equipment into an outlet on a circuit different from that to which the receiver is  connected. 
  • • Consult the dealer or an experienced radio/TV technician for help. 

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. 1. this device may not cause harmful interference, and 
  2. 2. this device must accept any interference received, including interference that may cause  undesired operation. 

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science  and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two  conditions: (1) This device may not cause interference, and (2) This device must accept any interference,  including interference that may cause undesired operation of the device. 

This Class B digital apparatus complies with Canadian ICES-003.

you can download the PDF version of Blue Pure Blueair 311 Auto/411 Auto User Manual here