Classic 203 Slim

Classic 203 Slim
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The Blueair Classic 203 Slim takes up so little space, yet it delivers solid clean-air performance. A great choice for smaller-sized rooms where you and your loved ones want to breathe easy.

Optimal air for medium spaces

Filters the air in a 240 ft² space in about 12.5 min¹ (4.8x an hour, based on AHAM recommended removal rate) to effectively lower particle levels and maintain a comfortable environment in medium spaces like master bedrooms, living rooms, and playrooms.

Blueair Classic 203
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Allergen & germ removal

Comes standard with a particle filter to remove airborne allergy and asthma triggers like pollen, dust, pet dander, mold, smoke and more.

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Sound design you can sleep on

Whisper quiet on the lowest speed (32 dB) and equivalent to the noise level of rainfall on the highest setting (56 dB).

Blueair Classic 605 placed in bedroom near wall - child laying on bed playing with tablet
Star powered savings on your energy bill

Energy-efficient engineering allows this purifier to use less energy than an incandescent lightbulb on its lowest setting at 20W and up to 80W on high. Confidently run it for quality air 24/7.

Independently proven performance
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Verifide(R) for performance and Clean Air Delivery Rate (CADR).
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Certified to meet ozone safety standards.
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Rated as energy-efficient air purifiers.
  • Wi-Fi connectivity for remote control
  • On/off timer
  • Filter replacement indicator
  • Speed control options
    1 - 2 - 3
  • Wheels
  • Integrated air sensors
Included in the box

Items packaged individually within box - please read manual for set-up instructions.

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Classic 203 Slim air purifier
Blueair IN the box - Instruction manual 211+ auto
Instruction manual
  • Dimensions(HxWxD)
    21 x 17 x 8 in
  • Product weight
  • Energy consumption
    20 - 80 W
  • Sound level
    32 - 56 dB(A)
  • Air outlet
  • Air inlet
  • Recommended room size
    240 ft2
  • Air changes per hour (ACH)
  • Clean air delivery rate (CADR) - Pollen
    155 cfm (263 m<sup>3</sup>/h)
  • Clean air delivery rate (CADR) - Dust
    155 cfm (263 m<sup>3</sup>/h)
  • Clean air delivery rate (CADR) - Smoke
    155 cfm (263 m<sup>3</sup>/h)

Guarantee clean air for years to come with up to 5-years of warranty coverage when you register your air purifier.

How do I disable the Wi-Fi function?

Press the Wi-Fi and filter buttons simultaneously for at least 3 seconds. To turn on the Wi-Fi function again, press only the Wi-Fi button for at least 3 seconds. 

I've replaced my filters, now how do I reset the filter replacement indicator?​

Press and hold down the LED button for 10 seconds to reset the replacement filter indicator. ​​

I'm having Wi-Fi connectivity issues, what can I do to troubleshoot?

First, make sure your Wi-Fi network is connected to the internet, and check that your network name and password are correct. You can also try unplugging the cord from the electrical outlet and plugging it back in again.