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Blueair air purifier

Blueair Blue Signature replacement filter

Blueair Blue Signature uses Blue Signature Replacement Filter (part 112973) as its primary replacement filter set.

Official Blueair fit · checked

All compatible Blueair Blue Signature filters

Every part number below is a primary replacement filter for this model.

Filter Part number Type Price
Blue Signature Replacement Filter 112973 Standard 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 Signature filter

  • Confirm the label on your purifier reads Blue Signature.
  • Make sure the listing names part 112973, 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 Signature Replacement Filter 112973: Blueair recommends replacing the Blue Signature filter every 6 months under standard 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 Signature use?

The Blueair Blue Signature uses Blue Signature Replacement Filter (112973). Each part number on this page is backed by an official Blueair source.

How often should I replace the Blueair Blue Signature filter?

Blueair recommends replacing the Blue Signature filter every 6 months under standard operation.

Where can I check replacement filters for the Blueair Blue Signature?

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 Signature Replacement Filter 112973

Official Blueair documentation identifies Blue Signature Replacement Filter, SKU 112973, as compatible with Blue Signature air purifier.

Source checked
Replacement guidance
Blueair recommends replacing the Blue Signature filter every 6 months under standard operation.
Guidance checked

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