Fits checked Oct 1, 2026 · How we check
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Blueair · air purifier

Blueair Classic 203 replacement filter

Use part 201PF. Interval not published by the maker.

The filter that fits

Maker lists this model

Blueair Classic 200 Series Particle Filter

Classic 200 Series Particle Filter

Part number
201PF
How many
1 per unit
How often
Interval not published by the maker

Blueair does not state how many of these filters the unit holds; the count of one shown here is not stated by the maker.

Buy Classic 200 Series Particle Filter on AmazonManufacturer page

Opens an Amazon search for Blueair Classic 200 Series Particle Filter 201PF. Check the listing says 201PF.

See the sources

Does your exact model share this filter?

Blueair labels several versions of the Classic 203. Check the label on your unit.

  • Classic 203 takes 201PF
  • 203 Slim same filter
  • 205 same filter
  • 270E same filter
  • 270E Slim same filter
  • 280i same filter
  • 303 same filter · Named in the page header ("Compatible with ... 303") but not in the FAQ list.

Look-alike models that take a different filter

The Classic 400 series takes 402PF and the Classic 500/600 series takes 501PFK.

Other genuine options from Blueair

Variants and kits the maker sells for this model. Same fit, different media or packaging.

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits blueair.com Maker's own page checked Oct 1, 2026
    This filter is compatible with the following Classic family models: 203, 203 Slim, 205, 270E, 270E Slim, 280i
  • How often blueair.com Maker's own page checked Oct 1, 2026
    A filter change indicator light that will alert you when it's time to replace the filter. (no month figure given)
  • Model variants blueair.com Maker's own page checked Oct 1, 2026
    Classic 200 Series Particle Filter Particle Compatible with 203 • 205 • 270E • 270E Slim • 203 Slim • 303
Show all 4 sources

Which filter fits

  1. blueair.com Maker's own page checked Oct 1, 2026
    This filter is compatible with the following Classic family models: 203, 203 Slim, 205, 270E, 270E Slim, 280i
  2. blueair.com Maker's own page checked Oct 1, 2026
    Classic 200 Series Particle Filter, sku 201PF: "Blueair 200 and 300 Series Particle Filter"

How often

  1. blueair.com Maker's own page checked Oct 1, 2026
    A filter change indicator light that will alert you when it's time to replace the filter. (no month figure given)

Model variants

  1. blueair.com Maker's own page checked Oct 1, 2026
    Classic 200 Series Particle Filter Particle Compatible with 203 • 205 • 270E • 270E Slim • 203 Slim • 303