Coway - Airmega 200M vs Xiaomi - Mi Smart Air Purifier 4 Pro
Between the Airmega 200M and Mi Smart Air Purifier 4 Pro, the Airmega 200M comes out ahead in min noise, while the Mi Smart Air Purifier 4 Pro wins on coverage / cadr. Overall, the Airmega 200M scores 56.3 and the Mi Smart Air Purifier 4 Pro scores 70.3 on our Mars Score.
Which should you buy?
The Mi Smart Air Purifier 4 Pro is the clear pick on raw spec strength, leading by 14.0 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. The biggest gaps in its favor are min noise.
Pick the Mi Smart Air Purifier 4 Pro if you care most about coverage / cadr. Its strongest claims are coverage, cadr.
Both ship with comparable true hepa h13+, activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: the Mi Smart Air Purifier 4 Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Coway - Airmega 200M wins
- ▲Min noise — 7.00 dB less. 25 vs 32.
Why Xiaomi - Mi Smart Air Purifier 4 Pro wins
- ▲Coverage — 81.82% more. 60 m² vs 33 m².
- ▲CADR — 25.00% more. 500 m³/h vs 400 m³/h.
Spec comparison
Performance
| Spec | Coway - Airmega 200M | Xiaomi - Mi Smart Air Purifier 4 Pro |
|---|---|---|
| CADR | 400 m³/h | 500 m³/hlead |
| Coverage | 33 m² | 60 m²lead |
| True HEPA H13+ | true | true |
| Activated carbon | true | true |
Smart & Noise
| Spec | Coway - Airmega 200M | Xiaomi - Mi Smart Air Purifier 4 Pro |
|---|---|---|
| Min noise | 25 dBlead | 32 dB |
| Air quality sensor | true | true |
| Smart app | false | truelead |
Spec-level deep dives
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