Between the 7770i and Airmega 200M, the 7770i comes out ahead in coverage and cadr, while the Airmega 200M wins on several specs. Overall, the 7770i scores 95 and the Airmega 200M scores 56.3 on our Mars Score.
Which should you buy?
The 7770i is the clear pick on raw spec strength, leading by 38.7 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 7770i if you care most about coverage and cadr. The biggest gaps in its favor are coverage, cadr, min noise.
The Airmega 200M similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable true hepa h13+, activated carbon, so those specs don't separate the two — focus on the differences below.
Bottom line: the 7770i is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Blueair - 7770i wins
- ▲Coverage — 203.03% more. 100 m² vs 33 m².
- ▲CADR — 125.00% more. 900 m³/h vs 400 m³/h.
- ▲Min noise — 3.00 dB less. 22 vs 25.
Why Coway - Airmega 200M wins
- No decisive advantages.
Spec comparison
Performance
| Spec | Blueair - 7770i | Coway - Airmega 200M |
|---|---|---|
| CADR | 900 m³/hlead | 400 m³/h |
| Coverage | 100 m²lead | 33 m² |
| True HEPA H13+ | true | true |
| Activated carbon | true | true |
Smart & Noise
| Spec | Blueair - 7770i | Coway - Airmega 200M |
|---|---|---|
| Min noise | 22 dBlead | 25 dB |
| Air quality sensor | true | true |
| Smart app | truelead | false |
Spec-level deep dives
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