BLUEAIR Blue Pure 311i Max vs Coway Airmega 400S
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 We do not present unpublished laboratory or in-home measurements as our own testing.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.
BLUEAIR Blue Pure 311i Max
BLUEAIR
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Feature comparison
| Feature | BLUEAIR Blue Pure 311i Max | Coway Airmega 400S |
|---|---|---|
| CADR | 283 / 314 / 365 CFM (Smoke / Dust / Pollen, AHAM Verifide) | 328 / 328 / 400 CFM (Smoke / Dust / Pollen) |
| Coverage | 439 sq ft (4.8 ACH) | 1,560 sq ft (2 ACH); 3,120 sq ft (1 ACH) |
| Noise level | 23-50 dB | 22-52 dB(A) |
| Power | 32 W | 66 W |
| Filter type | HEPASilent dual filtration; Particle & Carbon main filter + washable fabric pre-filter | 2 washable pre-filters + Max2 filter set (activated carbon + HEPA) |
| Filter life | 6-9 months (main filter); pre-filter washable | Max2 filter set 1 year; pre-filters washable |
| Warranty | 1 year limited; 3 years with product registration | 1 year (parts); 5 years (motor and electronic parts) |
| Dimensions | 19 x 12.5 x 12.5 in (H x W x D) | 14.8 x 22.8 x 14.8 in (W x H x D) |
| Weight | 7.8 lbs | 24.7 lbs |