Coway · SPECIFICATION PROFILE
Coway Airmega 400S
A larger-room candidate with a high captured purchase price. A lower-priced smaller model is only a fair alternative if it can meet the same room requirement.
Direct, untracked manufacturer link. Prices are dated snapshots, not live offers. The Home Briefing has not hands-on tested this product.
What to check before choosing
No additional model-specific discrepancy is recorded here. That is not a guarantee that every source claim is consistent or complete.
Listed room coverage depends on the air-change and ceiling-height assumptions. Minimum noise should not be paired with maximum CADR as though they occur at one fan speed. A purifier does not supply fresh outdoor air.
Replacement-filter price snapshot: Not captured. This is not an annual ownership cost. Confirm the exact model, pack contents, change interval and current price before ordering.
Compare nearby specifications
These two catalogue neighbours are selected by the recorded CADR within the same pollutant-label group, not a quality or suitability score. They are starting points, not a complete market shortlist.
| Specification | Coway Airmega 400S | Blue Pure 311i Max | Winix 5510 |
|---|---|---|---|
| Listed room area at ≈4.8 ACH | 650 ft² | 439 ft² | 392 ft² |
| Smoke CADR | 328 cfm | 283 cfm | 253 cfm |
| CADR, pollutant unspecified | See smoke CADR | See smoke CADR | See smoke CADR |
| Listed minimum noise | 22 dB | 23 dB | Not captured |
Evidence and limitations
Coway manufacturer source for Coway Airmega 400S. The figures above are source records, not independent verification. Missing fields stay missing; source conflicts remain visible. No review score, customer rating or tested-performance badge is assigned.
Numbers can change with a model revision, region or offer. Confirm the exact US listing and manual before purchase. Read how The Home Briefing handles specifications and corrections.