Levoit Core 300S Smart True HEPA Air Purifier review
A small-to-medium bedroom or home office on a budget
By Tom Calder · Price last checked 20 Sep 2026, 12:29 BST · price-tracked
The most affordable proper HEPA purifier on this list, and quiet enough at 22 dB to run overnight. Its official room-size claims vary depending on which Levoit page you read, so size it to the lower, twice-an-hour figure for a room that actually needs clearing quickly.
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 an Amazon Associate, PreparedBritain earns from qualifying purchases. We may earn a commission when you buy, or a fee when you request a quote, through our links — it never affects what we recommend. Amazon prices come from Amazon's own product data and show the date and time they were retrieved. Prices at other retailers are checked by us, less often. Prices and stock can change at any time, so always check the retailer's price before you buy.
- Cheapest True HEPA option here
- 22 dB Sleep Mode genuinely quiet for a bedroom
- Interchangeable filter variants for pet allergy, toxins or mould
- Levoit's own room-size figures for once- vs twice-hourly air changes aren't identical to Amazon's listed figure, so check which you're relying on
- Maximum-speed noise level isn't published, so you can't compare it directly to rivals at full power
Who shouldn't buy this
you need to cover a large open-plan room — step up to the Core 400S or a higher-CADR model instead.
Key specs
| Room size | 100 m² |
| CADR | 258 m³/h |
| Filter | 3-stage: pre-filter, True HEPA, activated carbon |
| Noise (min) | 22 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?
Prices for 364 tracked products are refreshed daily — last sweep 20 September 2026. Leave your email and we'll tell you when it drops — nothing else.