Standard replacement filter
Blueair ComfortPure 3-in-1 T20i Replacement Filter – 111852 replacement filter
ComfortPure 3-in-1 T20i Replacement Filter (111852) fits Blueair ComfortPure 3-in-1 T20i according to the cited Blueair source.
111852
Check official Blueair availability
Non-affiliate link to the cited official product page.
Quick fit check
ComfortPure 3-in-1 T20i Replacement Filter fit and replacement facts
Blueair recommends replacing the T20i PAC filter set every 6 months under continuous operation.
Compatible Blueair models
Follow a model link for its complete primary, optional, specialty, and alternative filter list.
| Model | Filter | Part number | Role | Source | Marketplace |
|---|---|---|---|---|---|
| Blueair ComfortPure 3-in-1 T20i | ComfortPure 3-in-1 T20i Replacement Filter | 111852 |
Standard replacement filter | Blueair Official ComfortPure 3-in-1 T20i Replacement Filter | Check prices |
Buying checklist
What to check in a filter listing
Confirm that the listing names part 111852 and one of the compatible models: Blueair ComfortPure 3-in-1 T20i. Similar-looking filters are not proof of fit.
Decide whether you want an OEM or aftermarket filter, then compare the included pieces, product photos, seller details, delivery estimate, and total price.
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.
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 2026-07-22. Recheck the listing and your purifier label before ordering.