Between the Airmega 200M and HPA300, the Airmega 200M comes out ahead in min noise, while the HPA300 wins on coverage and cadr. Overall, the Airmega 200M scores 56.3 and the HPA300 scores 65 on our Mars Score.
Which should you buy?
The HPA300 is the clear pick on raw spec strength, leading by 8.7 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 Airmega 200M if you care most about min noise. The biggest gaps in its favor are min noise.
Pick the HPA300 if you care most about coverage and cadr. Its strongest claims are coverage, cadr.
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 HPA300 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 Honeywell - HPA300 wins
- ▲Coverage — 33.33% more. 44 m² vs 33 m².
- ▲CADR — 27.50% more. 510 m³/h vs 400 m³/h.
Spec comparison
Performance
| Spec | Coway - Airmega 200M | Honeywell - HPA300 |
|---|---|---|
| CADR | 400 m³/h | 510 m³/hlead |
| Coverage | 33 m² | 44 m²lead |
| True HEPA H13+ | true | true |
| Activated carbon | true | true |
Smart & Noise
| Spec | Coway - Airmega 200M | Honeywell - HPA300 |
|---|---|---|
| Min noise | 25 dBlead | 32 dB |
| Air quality sensor | truelead | false |
| Smart app | false | false |
Frequently asked
Spec-level deep dives
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