Air purifier · Confirmed for this model

WINIX WACU300 replacement filter

We found one replacement that the manufacturer lists for this model.

Confirmed for this modelManufacturer-confirmed relationshipThe manufacturer source we used lists this model or part relationship.

Brand: WINIXModel: WACU300Category: Air purifierChecked: 2026-08-22

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The exact model number is best, but brand names and filter part numbers work too.

Other ways this model may be written

U300

Confirmed for this modelAir purifier filter setGenuine manufacturer part

WINIX Filter B

Part / reference

Filter B

This is the genuine WINIX replacement listed for this model.

Where to buy Genuine WINIX replacement Buy from WINIX → Confirmed for your model See manufacturer evidence

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Replacement guidance: About every 12 months, subject to the purifier indicator and usage.

Reference sourcesManufacturerWINIX manufacturer page

Before ordering

Check that the full model name or code on your appliance matches the one above. If your old filter has a reference printed on it, compare it with Filter B.

Why we think this fitsManufacturer evidence is available

Manufacturer replacement-filter compatibility listing.

The manufacturer replacement-filter page explicitly lists this model as compatible.

See the manufacturer source →

Specialist parts sites may be used as a second reference for factual details such as dimensions, alternate part-number formatting or model-family clues. They do not upgrade an uncertain match to “confirmed” on their own.