2Rank 02 of 10 · Air Purifiers
Levoit Core 400S
A 400 m³/h cylinder for mid-size living rooms and the best-evidenced Levoit: HouseFresh measured the European version itself. Levoit's own noise and wattage figures look optimistic next to those measurements.
7.8BPR score
- €220Price
- 400 m³/h — published by Levoit; no certification mark on the EU pageParticle CADR in m³/h, as published by the manufacturer
- 2 of 10in Air Purifiers
- 7.8BPR score 0–10
Review
What this product is
Written after the analysis, from the same sources the score is built on: the manufacturer's documentation, available studies and verified owner feedback.
The Core 400S is for rooms of roughly 25 to 35 m² where the smaller Levoits run out of breath. Levoit publishes 400 m³/h and '83 m² twice per hour'; at five air changes per hour that is about 33 m².
Its strength is independent evidence. HouseFresh, which buys and measures purifiers itself, cleared its 728 cubic-foot (about 20.6 m³) test room of PM1 in 30 minutes with the European version and in 24 minutes with the US version. On the US unit it measured a top-speed PM1 CADR of 249 cfm, about 423 m³/h, falling to 134 cfm at the fastest setting below 45 dBA.
The same measurements show where the spec sheet flatters. Levoit states 24–48 dB and 24 W maximum; HouseFresh recorded 60.3 dBA at one metre and 39.6 W at top speed on the US version. The versions differ, but expect the top speed to be clearly audible.
The filter is described as HEPA with 99.97 % at 0.3 µm, with no EN 1822 class. Levoit recommends a new filter at least every 12 months and calls the unit 100 % ozone-free. Dimensions are missing from the German page, and so is a filter price. On levoit.de, 33 of 43 reviews give five stars.
Technical data
Specification
Figures from the manufacturer's documentation, verified against available outside sources. Values we could not confirm are marked as declared.
- Particle CADR
- 400 m³/h
- Room size claimed
- 83 m², twice per hour
- Room size at 5 air changes/h (2.4 m ceiling)
- about 33 m² (our calculation)
- Filter
- 3 layers: pre-filter, HEPA, activated carbon; 99.97 % at 0.3 µm
- EN 1822 class
- not published
- Noise (Levoit)
- 24–48 dB
- Power (Levoit)
- 24 W maximum
- Weight
- 5 kg
- Dimensions
- not published on levoit.de
- Filter interval
- at least every 12 months
- HouseFresh PM1 test (EU version)
- 30 minutes in a 728 cu ft room
- HouseFresh top speed (US version)
- 60.3 dBA, 39.6 W, PM1 CADR 249 cfm
Component scores
Where the score
comes from.
Four components, equal weight, each on a 0–10 scale and each resting on a named source. The overall score is their mean — the full procedure is in the methodology.
What we liked
- 400 m³/h for €219.99: about €0.55 per m³/h
- European version measured by HouseFresh: test room cleared of PM1 in 30 minutes
- 24 dB in sleep mode according to Levoit
- Stated as 100 % ozone-free
- Filter change only about once every 12 months
Worth knowing
- No EN 1822 filter class, only 'HEPA' and 99.97 % at 0.3 µm
- HouseFresh measured 60.3 dBA and 39.6 W at top speed on the US version, against Levoit's 48 dB and 24 W
- 83 m² claim assumes two air changes per hour; about 33 m² at five
- Dimensions and filter price not on the German product page
Comparison
How it compares
within the category
All values come from the same analysis and are comparable only within the category Air Purifiers.
| Product | Score | Particle CADR in m³/h, as published by the manufacturer | Price |
|---|---|---|---|
| Air 4000Top score | 8.4 | 300 m³/h — published by Bosch; not independently certified on the product page | €198 |
| Core 400SThis product | 7.8 | 400 m³/h — published by Levoit; no certification mark on the EU page | €220 |
| Category average10 products analysed | 7.4 | — | — |
FAQ
Frequently asked questions
Why do HouseFresh's noise figures differ from Levoit's?
Levoit states 24–48 dB without naming the measuring distance; HouseFresh measured 60.3 dBA at about one metre on the US version at top speed. Different versions and methods explain part of the gap, but the top speed is not quiet.
Core 400S or Core 300S Pro?
The 400S delivers 400 m³/h against 240 m³/h for €70 more, so it costs less per cubic metre of clean air and can run on a slower, quieter speed in the same room. The 300S Pro only makes sense for rooms up to about 20 m².
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