Coway Airmega 400S vs Winix A231
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
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We compare published manufacturer specifications, manuals, support policies, and relevant public guidance. We do not present unpublished laboratory or in-home measurements as our own testing.
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Use the feature table below to match published specifications to your room, filtration, and noise requirements. We do not assign an overall score without retained independent test evidence.
Winix A231
Winix
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Feature comparison
| Feature | Coway Airmega 400S | Winix A231 |
|---|---|---|
| Coverage | 492 sq ft (4.8 ACH) | 230 sq ft (AHAM Verifide) |
| CADR | 328 / 328 / 400 CFM (Smoke / Dust / Pollen) | 147 / 149 / 154 CFM (Smoke / Dust / Pollen) |
| Filter type | Dual washable pre-filter + Max2 filter set (activated carbon + True HEPA) | 360-degree pre-filter + True HEPA + activated carbon + PlasmaWave |
| Noise level | 22-52 dB (rated) | 25 dB minimum |
| Weight | 24.7 lbs | 6.75 lbs |