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Blueair Blue Pure 121 replacement filter

Blueair Blue Pure 121 uses Blue Pure 121 Particle + Carbon Filter (part F121PACF104507) as its primary replacement filter set.

Quick fit check

Match the exact filter before buying

The official manufacturer source identifies these primary parts for the Blueair Blue Pure 121.

Standard replacement filter Blue Pure 121 Particle + Carbon Filter F121PACF104507
View part details Official Blueair source

Marketplace search

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A current exact-part listing snapshot is not available. Use the part-number searches below and verify the listing before ordering.

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All compatible part numbers

Primary, optional, specialty, and alternative filters are listed separately so you can match the role as well as the part number.

Filter Part number Role Source
Blue Pure 121 Extra Protection Particle and Carbon Filter F121PACF101653 Alternative extra-protection replacement filter Blueair Official Blue Pure 121 Extra Protection Particle and Carbon Filter
Blue Pure 121 Particle + Carbon Filter F121PACF104507 Standard replacement filter Blueair Official Blue Pure 121 Particle + Carbon Filter

Official compatibility record

Manufacturer evidence

Each compatibility and care statement below is reproduced from the cited official manufacturer record. Check the source again before ordering.

Blue Pure 121 Extra Protection Particle and Carbon Filter F121PACF101653

Official Blueair documentation identifies Blue Pure 121 Extra Protection Particle and Carbon Filter, SKU F121PACF101653, as compatible with Blue Pure 121.

Source checked
Replacement guidance
Blueair recommends replacing the filter about every 6 months of continuous operation.
Guidance checked

Blue Pure 121 Particle + Carbon Filter F121PACF104507

Official Blueair documentation identifies Blue Pure 121 Particle + Carbon Filter, SKU F121PACF104507, as compatible with Blue Pure 121.

Source checked
Replacement guidance
Blueair recommends replacing the filter about every 6 months of continuous operation.
Guidance checked

Buying checklist

How to choose the right replacement

Match the Blueair Blue Pure 121 model label and the exact part number above. Marketplace listings can be OEM or aftermarket, and a similar-looking filter may have different dimensions.

Compare the listing title, product photos, included filter pieces, seller details, delivery estimate, and total price before you order.

Care guidance

Replacement schedule

  • Blue Pure 121 Particle + Carbon Filter F121PACF104507: Blueair recommends replacing the filter about every 6 months of continuous operation.

Usage and air quality can affect service life. Follow the cited manufacturer guidance for each part.

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Frequently asked questions

What filter does the Blueair Blue Pure 121 use?

The Blueair Blue Pure 121 uses Blue Pure 121 Particle + Carbon Filter (F121PACF104507) as its primary replacement filter parts. It also has these optional, specialty, or alternative compatible parts: Blue Pure 121 Extra Protection Particle and Carbon Filter (F121PACF101653). Those parts are not simultaneously required primary filters.

How often should I replace the Blueair Blue Pure 121 filter?

Blueair recommends replacing the filter about every 6 months of continuous operation.

Where can I check replacement filters for the Blueair Blue Pure 121?

This page links directly to the cited official Blueair product page and shows sponsored individual eBay listings when a fresh exact-part snapshot is available, with an exact-part eBay search fallback. This site does not sell filters; match the part number and review the current source or seller listing before buying.