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Standard replacement filter

Blueair Blue Signature Replacement Filter 112973 replacement filter

Blue Signature Replacement Filter (part 112973) fits Blueair Blue Signature, according to the official Blueair product page.

Official Blueair fit · checked

Blueair models that use Blue Signature Replacement Filter 112973

This filter is listed for one model. Open a model to see its complete list of primary, optional, and specialty filters.

Before you order

What to check in a 112973 listing

  • The listing names part 112973. Similar-looking filters are not proof of fit.
  • Your purifier is one of the compatible models: Blueair Blue Signature.
  • The pack size and pieces included match what you need. Genuine and third-party filters can differ.
  • The total price with shipping, seller feedback, and delivery estimate work for you.

Care guidance

Replacement schedule

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

Usage conditions can affect service life. Follow the cited manufacturer guidance for this part.

Frequently asked questions

How often should I replace the Blueair Blue Signature Replacement Filter (112973)?

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

Which Blueair models use the Blue Signature Replacement Filter 112973?

According to the official Blueair product page, Blue Signature Replacement Filter (112973) fits Blueair Blue Signature. Verify the model label on your unit before ordering.

Do aftermarket 112973 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 112973, review the listing details, and verify the model label on your unit before buying.

Official compatibility record

Manufacturer source

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

Blueair Official Blue Signature Replacement Filter

Source compatibility checked 2026-08-29. Recheck the listing and your purifier label before ordering.