Winix Zero-S Air Purifier review
Large bedrooms or living rooms up to 100m², and hay fever/allergy sufferers.
By Tom Calder · Price last checked 20 Sep 2026, 12:29 BST · price-tracked
A capable, quiet HEPA purifier that steps in cleanly for the discontinued original Zero — strong coverage for bigger rooms, though the front cover is fiddly if you plan to move it between rooms.
as of 20 Sep 2026, 12:29 BST · Details
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- True HEPA H13 filter traces 99.999% of fine particles down to 0.1 microns
- Manufacturer-rated 27dB sleep mode with dimmed lights
- Auto mode plus a large 100m² coverage suits open-plan living spaces
- Front cover comes off easily when carrying it, so it's best left in one spot
- Replacement filter sets add a meaningful yearly running cost
- Independent testing measured 35-43dB in normal use — quiet on paper, audible in practice — and the 100m² rating assumes gentle air changes, not rapid cleaning
Who shouldn't buy this
Skip it if you need to shift a purifier room to room daily — the loose front panel makes that awkward; a compact model is better suited.
Key specs
| Room size | Up to 100m² m² |
| CADR | 410 m³/h |
| Filter | 4-stage: H13 HEPA, carbon, PlasmaWave |
| Noise (min) | 27dB (sleep mode) dB |
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Alternatives to consider
as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Want this cheaper?
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