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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.

Official Blueair fit · checked

All compatible Blueair Blue Pure 121 filters

Primary filters are listed first. Specialty, optional, and alternative filters also fit, but you only need them if you want that feature.

Filter Part number Type Price
Blue Pure 121 Particle + Carbon Filter F121PACF104507 Standard replacement filter Check price
Blue Pure 121 Extra Protection Particle and Carbon Filter F121PACF101653 Alternative extra-protection replacement filter Check price

Price links open sponsored eBay searches for the exact part number.

Before you order

How to buy the right Blueair Blue Pure 121 filter

  • Confirm the label on your purifier reads Blue Pure 121.
  • Make sure the listing names part F121PACF104507, not just a similar-looking filter.
  • Check the pack size and pieces included. Genuine and third-party filters can differ.
  • Compare the total price with shipping, plus the seller's feedback and delivery estimate.

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.

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.

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

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