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Blueair model lookup
Blueair Blue Signature uses Blue Signature Replacement Filter (part 112973) as its primary replacement filter set.
Quick fit check
The official manufacturer source identifies these primary parts for the Blueair Blue Signature.
112973
Marketplace search
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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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 Signature Replacement Filter | 112973 |
Standard replacement filter | Blueair Official Blue Signature Replacement Filter |
Official compatibility record
Each compatibility and care statement below is reproduced from the cited official manufacturer record. Check the source again before ordering.
112973Official Blueair documentation identifies Blue Signature Replacement Filter, SKU 112973, as compatible with Blue Signature air purifier.
Buying checklist
Match the Blueair Blue Signature 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
Usage and air quality can affect service life. Follow the cited manufacturer guidance for each part.
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The Blueair Blue Signature uses Blue Signature Replacement Filter (112973). Each part number on this page is backed by an official Blueair source.
Blueair recommends replacing the Blue Signature filter every 6 months under standard operation.
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.