Blueair replacement filters by model

Original replacement filters listed for Blueair air purifiers, each with the manufacturer page for this market. Keep every suffix of your model label.

Purifier model	Brand	Original filter	Source and record
Blue Pure 221Blueair · UK source	Blueair	Blue Pure 221 Series Particle + Carbon Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20
Blue Max 3250iBlueair · UK source	Blueair	Blue Max 3250i Particle + Carbon Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20
Blue Max 3450iBlueair · UK source	Blueair	Blue Max 3450i Particle + Carbon Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20
Blue 3350i MaxBlueair · UK source	Blueair	Blue Max 3350i Particle + Carbon Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20
Blue 3210Blueair · UK source	Blueair	Blue 411/3210 Series Particle + Carbon Filter	Manufacturer page ↗Family or catalog listing · checked 2026-10-20
Blue 3410Blueair · UK source	Blueair	Blue 3410 Series Particle + Carbon Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20
Blue 3610Blueair · UK source	Blueair	Blue Pure 3610 Particle + Carbon Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20
Classic Pro CP9iBlueair · UK source	Blueair	Classic Pro CP9i Replacement Filter	Manufacturer page ↗Exact model stated · checked 2026-10-20

Evidence for each model

Blueair Blue Pure 221 · Blue Pure 221 Series Particle + Carbon Filter

UK page; US 211+ filter JSON description also mentions 'Pure 221' but the US page text does not. UK listing; the same page's FAQ also mentions the 211/211+, so US fit is not separately confirmed.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Blue Max 3250i · Blue Max 3250i Particle + Carbon Filter

Filter page names this model in its compatibility statement. Does not establish fit for regional variants, other filter grades, or pre-filters.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Blue Max 3450i · Blue Max 3450i Particle + Carbon Filter

Filter page names this model in its compatibility statement. Does not establish fit for regional variants, other filter grades, or pre-filters.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Blue 3350i Max · Blue Max 3350i Particle + Carbon Filter

UK page; US sells the equivalent as the 311i Max filter (F3MAX), which is already covered. Does not establish fit for regional variants, other filter grades, or pre-filters.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Blue 3210 · Blue 411/3210 Series Particle + Carbon Filter

Page pairs 3210 with the 411 in a slash form rather than listing it alone. Does not establish fit for regional variants, other filter grades, or pre-filters. The page names this model only in a header or combined label, not in its compatibility list.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Blue 3410 · Blue 3410 Series Particle + Carbon Filter

Filter page names this model in its compatibility statement. Does not establish fit for regional variants, other filter grades, or pre-filters.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Blue 3610 · Blue Pure 3610 Particle + Carbon Filter

Filter page names this model in its compatibility statement. Does not establish fit for regional variants, other filter grades, or pre-filters.

Blueair official product page · UK · 2026-10-20 ↗All brands

Blueair Classic Pro CP9i · Classic Pro CP9i Replacement Filter

Filter page names this model in its compatibility statement. Does not establish fit for regional variants, other filter grades, or pre-filters.

Blueair official product page · UK · 2026-10-20 ↗All brands

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Filter Ledger. “Blueair Replacement Filters in the UK”. https://filters.toolatlas.app/en-gb/brands/blueair/. Last updated 21 October 2026.