Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Coway - Airmega 400 | Molekule - Air Pro |
|---|---|---|
| Coverage | 60 m² | 93 m² |
| CADR | 705 m³/h | 500 m³/h |
| Min noise | 22 dB | 30 dB |
| True HEPA H13+ | true | false |
Between the Airmega 400 and Air Pro, the Airmega 400 comes out ahead in cadr / min noise, while the Air Pro wins on coverage. Overall, the Airmega 400 scores 85.4 and the Air Pro scores 70.2 on our Mars Score.
Which should you buy?
The Airmega 400 is the clear pick on raw spec strength, leading by 15.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Airmega 400 if you care most about cadr / min noise. The biggest gaps in its favor are cadr, min noise, true hepa h13+. The single most decisive one: CADR — 41.00% more. 705 m³/h vs 500 m³/h.
Pick the Air Pro if you care most about coverage. Its strongest claims are coverage. The single most decisive one: Coverage — 55.00% more. 93 m² vs 60 m².
Both ship with comparable activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: the Airmega 400 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Coway - Airmega 400 or Molekule - Air Pro?
Coway - Airmega 400 leads the current Mars Score by 15.2 points.The more useful decision is the trade-off behind that result: compare cadr, coverage, true hepa h13+, 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, has hepa 13.
Choose Molekule - Air Pro if…
Molekule - Air Pro has the measurable edge on coverage m2.
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 — 41.00% more. 705 m³/h vs 500 m³/h.
- ▲Min noise — 8.00 dB less. 22 vs 30.
- ▲Has True HEPA H13+.
Why Molekule - Air Pro wins
- ▲Coverage — 55.00% more. 93 m² vs 60 m².
Spec comparison
Performance
| Spec | Coway - Airmega 400 | Molekule - Air Pro |
|---|---|---|
| CADR | 705 m³/hlead | 500 m³/h |
| Coverage | 60 m² | 93 m²lead |
| True HEPA H13+ | truelead | false |
| Activated carbon | true | true |
Smart & Noise
| Spec | Coway - Airmega 400 | Molekule - Air Pro |
|---|---|---|
| Min noise | 22 dBlead | 30 dB |
| Air quality sensor | true | true |
| Smart app | true | true |