Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Coway - Airmega 200M | Winix - 5500-2 |
|---|---|---|
| CADR | 400 m³/h | 415 m³/h |
| Min noise | 25 dB | 27 dB |
| True HEPA H13+ | true | false |
Between the Airmega 200M and 5500-2, the Airmega 200M comes out ahead in min noise / true hepa h13+, while the 5500-2 wins on cadr. Overall, the Airmega 200M scores 74.2 and the 5500-2 scores 60.1 on our Mars Score.
Which should you buy?
The Airmega 200M is the clear pick on raw spec strength, leading by 14.1 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 200M if you care most about min noise / true hepa h13+. The biggest gaps in its favor are min noise, true hepa h13+. The single most decisive one: Min noise — 2.00 dB less. 25 vs 27.
Pick the 5500-2 if you care most about cadr. Its strongest claims are cadr. The single most decisive one: CADR — 3.75% more. 415 m³/h vs 400 m³/h.
Both ship with comparable coverage, activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: the Airmega 200M 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 200M or Winix - 5500-2?
Coway - Airmega 200M leads the current Mars Score by 14.1 points.The more useful decision is the trade-off behind that result: compare cadr, true hepa h13+, min noise against the way you will actually use the product.
Choose Coway - Airmega 200M if…
Coway - Airmega 200M has the measurable edge on noise db min, has hepa 13.
Choose Winix - 5500-2 if…
Winix - 5500-2 has the measurable edge on cadr m3h.
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 200M wins
- ▲Min noise — 2.00 dB less. 25 vs 27.
- ▲Has True HEPA H13+.
Why Winix - 5500-2 wins
- ▲CADR — 3.75% more. 415 m³/h vs 400 m³/h.
Spec comparison
Performance
| Spec | Coway - Airmega 200M | Winix - 5500-2 |
|---|---|---|
| CADR | 400 m³/h | 415 m³/hlead |
| Coverage | 33 m² | 33 m² |
| True HEPA H13+ | truelead | false |
| Activated carbon | true | true |
Smart & Noise
| Spec | Coway - Airmega 200M | Winix - 5500-2 |
|---|---|---|
| Min noise | 25 dBlead | 27 dB |
| Air quality sensor | true | true |
| Smart app | false | false |