Winix Zero Air Purifier review
A large room needing strong CADR and H13-grade HEPA at a mid-range price, for buyers who'll tolerate it running louder than the spec sheet suggests
By Tom Calder
We no longer recommend this model, so it no longer appears in our buying guides. In its place, we now recommend Winix Zero-S Air Purifier in our Air purifiers guide.
Strong on paper — 99 m² coverage and 390 m³/h CADR rival the Philips at a lower price — but independent noise measurements ran well above Winix's own figures, and the exact live price needs checking as estimates varied widely across retailers this round. Capable, but the noisiest real-world performer among the large-room options.
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- High published CADR at 390 m³/h, close to the Philips' 380 m³/h
- H13-grade HEPA plus a 4-stage filtration stack including PlasmaWave
- Large 99 m² room coverage for a mid-range price
- Independent noise measurements ran significantly louder than Winix's own published figures — expect it to be noticeable on higher settings
- Listings mix up variants, so check the exact model name before ordering
- PlasmaWave ionisation technology is a filtration-adjacent feature some buyers prefer to avoid — check you're comfortable with it before buying
Who shouldn't buy this
a quiet bedroom unit is the priority — the Levoit Core 300S's 22 dB sleep mode is a better-documented quiet option.
Key specs
| Room size | 99 m² |
| CADR | 390 m³/h |
| Filter | 4-stage: pre-filter, H13 HEPA, activated carbon and PlasmaWave technology |
| Noise (min) | 40.8 dB |
Our rating is a considered spec-and-evidence verdict: we verify every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who a product isn't for. Commissions never change a rating. Read the full methodology →
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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