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Standard replacement filter

Blueair ComfortPure 3-in-1 T20i Replacement Filter 111852 replacement filter

ComfortPure 3-in-1 T20i Replacement Filter (part 111852) fits Blueair ComfortPure 3-in-1 T20i, according to the official Blueair product page.

Official Blueair fit · checked

Blueair models that use ComfortPure 3-in-1 T20i Replacement Filter 111852

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 111852 listing

  • The listing names part 111852. Similar-looking filters are not proof of fit.
  • Your purifier is one of the compatible models: Blueair ComfortPure 3-in-1 T20i.
  • 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 T20i PAC filter set every 6 months under continuous 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 ComfortPure 3-in-1 T20i Replacement Filter (111852)?

Blueair recommends replacing the T20i PAC filter set every 6 months under continuous operation.

Which Blueair models use the ComfortPure 3-in-1 T20i Replacement Filter 111852?

According to the official Blueair product page, ComfortPure 3-in-1 T20i Replacement Filter (111852) fits Blueair ComfortPure 3-in-1 T20i. Verify the model label on your unit before ordering.

Do aftermarket 111852 filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 111852, review the listing details, and verify the model label on your unit before buying.

Official compatibility record

Manufacturer source

Official Blueair documentation identifies ComfortPure 3-in-1 T20i Replacement Filter, SKU 111852, as compatible with ComfortPure 3-in-1 T20i.

Blueair Official ComfortPure 3-in-1 T20i Replacement Filter

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