Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Coway - Airmega 400 | Levoit - Core 600S |
|---|---|---|
| CADR | 705 m³/h | 680 m³/h |
| Min noise | 22 dB | 24 dB |
Between the Airmega 400 and Core 600S, the Airmega 400 comes out ahead in cadr / min noise, while the Core 600S wins on several specs. Overall, the Airmega 400 scores 85.4 and the Core 600S scores 83.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (85.4 vs 83.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Airmega 400 if you care most about cadr / min noise. The biggest gaps in its favor are cadr, min noise. The single most decisive one: CADR — 3.68% more. 705 m³/h vs 680 m³/h.
The Core 600S similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable coverage, true hepa h13+, activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Coway - Airmega 400 or Levoit - Core 600S?
Coway - Airmega 400 leads the current Mars Score by 1.5 points.The more useful decision is the trade-off behind that result: compare cadr, min noise against the way you will actually use the product.
Choose Coway - Airmega 400 if…
Coway - Airmega 400 has the measurable edge on cadr m3h, noise db min.
Choose Levoit - Core 600S if…
Levoit - Core 600S does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Coway - Airmega 400 wins
- ▲CADR — 3.68% more. 705 m³/h vs 680 m³/h.
- ▲Min noise — 2.00 dB less. 22 vs 24.
Why Levoit - Core 600S wins
- No decisive advantages.
Spec comparison
Performance
| Spec | Coway - Airmega 400 | Levoit - Core 600S |
|---|---|---|
| CADR | 705 m³/hlead | 680 m³/h |
| Coverage | 60 m² | 60 m² |
| True HEPA H13+ | true | true |
| Activated carbon | true | true |
Smart & Noise
| Spec | Coway - Airmega 400 | Levoit - Core 600S |
|---|---|---|
| Min noise | 22 dBlead | 24 dB |
| Air quality sensor | true | true |
| Smart app | true | true |