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Blueair 203 Slim Air Purifier

Regular price: £239.02
Our price: £239.00 (inc. VAT)
Next day dispatch
In stock

Quick Overview

  • Ideal for Small Rooms
  • Slim Design
  • Ultra Quiet
  • Mechanical/Ionisation
  • Best Performance in its Price Range
  • Energy Star Rated
Blueair 203 Slim Air Purifier

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  • 203 Blueair Slim Air Purifier
  • Blueair 203 air cleaner
  • Blueair 203 air purifier cross cut

The Blueair 203 Slim Air Purifier is the new and more narrow design of the Blueair 200 Series air purifiers. It is ideal for small rooms and offices. It uses Blueair's typical 'HEPASilent' filter technology, a powerful ioniser and an Energy Star-rated motor to clean your air faster, and with less noise than other units in its class. It is effective in removing a large range of pollution and allergens such as dust, pet dander, dust mite allergens, pollen, mould spores and more.

The Blueair 203 Slim air purifier is a great choice for everyone who wants more control over their indoor air quality and who want to breathe cleaner air at a great price.

  • Hay-Fever
  • Pet Allergens (cat, dog, horse etc.)
  • Pollen
  • Heavy Dust
  • Fine Dust
  • Dust Mite Allergens

City Pollution
  • Smog
  • Transportation (cars, trains, planes)
  • Industry Pollution

  • Bacteria
  • Viruses
  • Fungal Spores

In combination with SmokeStop Filters:

Light Gases & Fumes
  • Paints
  • Varnishes
  • Adhesives
  • Formaldehyde
  • Building Material
Light Odours  
  • Pet Dander (cats, dogs etc.)
  • Cooking Odours
  • Musty Smells
  • Tobacco Smoke


Please note: With 1Kg of granular carbon, the Blueair 203 domestic air cleaner is not suitable for removing significantly elevated levels of chemical, gas and odour pollution.


A combination technology of mechanical filtration and ionisation. Actual filtration efficiency depends on speed setting and filter life.

Airflow Rate: Speed 1 - 100 m3/h
Speed 2 - 150 m3/h
Speed 3 - 290 m3/h (according to the manufacturer)
Room Size: Small Rooms
Decibel Levels: Speed 1 - 32 dBA
Speed 2 - 42 dBA
Speed 3 - 56 dBA
Dimensions: 53 x 44 x 21 cm; 61 x 50 x 31 cm
21 x 17 x 9 in; 25 x 20 x 13 in
Power Usage: 20 to 80 watts
Weight: (without/ with packaging) 11 kg; 25 lbs
14 kg; 31 lbs
Filter Service Life: According to the manufacturer the filter should be replaced after 6 month.
Wi-Fi: No
Remote Control: No
Auto mode: No
Castors No
Accessories No
Air Quality Monitor No
Replacement Filters: Blueair 200 Series or Blueair 200 Series SmokeStop Filter
Electronic sensor with remote: No
Filter replacement indicator: No
On/off timer: No
Speed control options Yes, manual dial with three speed settings.
Air outlet: Top
Air inlet: Back
Warranty 5 year manufacturer warranty
Country of Manufacture: China

1. Easy to Operate
The Blueair 203 air filter does not have the digital display system and remote control of the 270E model. The speed settings are changed manually with a speed dial at the front of the unit.


  • 2. & 3. Ultra Quiet
    Just as the 270E, the Blueair 203 air purifier uses Blueair’s "HEPASilent technology" eventhough not actual 'HEPA' filtration. This filtration technology is a combination of mechanical and ionisation, and allows the Blueair 203 to deliver more clean air at a faster rate with less noise than most other domestic air purifier in this class. Blueair’s filtration technology also allows the Blueair 203 to have especially low energy consumption.


  • 4. Design & Durability
    The Blueair 203 air cleaner has the sleek and contemporary look that Blueair air purifiers are famous for. It is built with a galvanised steel housing that is impact resistant and easy to clean.



Below is a comparison table which shows what the differences are between the Blueair 200 series range of air purifiers.

The Blueair 203 - as all other Blueair air purifiers - uses a Three-Stage Progressive Filter – a filter that resembles having many filters in one.
This filter is not actually a HEPA filter (eventhough it is called "HEPASilent") and is made up out of three different levels of ultra thin fibers, and with its ‘lock-in’ design capturs particles. The first layers capture larger particles like pollen and dust, and the later layers capture smaller particles like bacteria and exhaust particles.

Regular mechanical air purifier filters are often thinner and mostly consist of the same fiber size and material throughout, which leads to them clogging up sooner. However, the filter design of the Blueair 203 "Three-Stage Progressive Filter" prevents the filter from premature loading, and allows the 203 air purifier to have a longer filter life.  Blueair recommends to change the filter every 6 months.

When the filter needs to be replaced, just open the back, take out the old filter and put the new one in. No screws, hooks or tools are needed. It is as simple as taking a book out of a bookshelf.

The Blueair 203 air purifier can also be used with the 200 Series SmokeStop replacement filters, which adds 0.9kg of activated carbon for odour and gas filtration.


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4.71 Average

7 Reviews

jose a

Blueair 203 Slim Air Purifier

Great machine I can smell the difference now

Posted 7 months ago

Marcin J

Blueair 203 Slim Air Purifier

Easiest simple and most important: doing its job perfectly!

Posted more than 1 year ago

Walter M

Blueair 203 Slim Air Purifier

Posted more than 1 year ago

Lesley J

Blueair 203 Slim Air Purifier

With ten cats at home and five very large, very dusty litter trays, I recently asked for help in my pet forum. A friend recommended this air purifier and it has made a huge difference. It's living in the study where I spend a lot of time and which I have to share with two of the trays. The furniture stays much cleaner and the air is definitely better to breathe. I am now happy to continue scanning my collection of film and slides - something I stopped some time ago because of all the dust. We are already talking about getting another unit for the dining room (two more trays), as the dust floats into the kitchen, coating the Aga. I don't mind doing housework, but not when you are back to square one within a few hours. The purifier has made me much happier.

Posted more than 1 year ago


Blueair 203 Slim Air Purifier

This is robustly made , has a powerful fan, and very effective filters. One can tell this is top quality straight away. I highly recommend ,if one is going to purchase in this kind of price range.

Posted more than 1 year ago

Paul D

Blueair 203 Slim Air Purifier

Posted more than 1 year ago

Ellen G

Blueair 203 Slim Air Purifier

Excellent product

Posted more than 1 year ago