BLUEAIR Blue Pure 311i Max moves more air (CADR) and covers a larger room than Winix 5520.
Which purifier has higher CADR?
BLUEAIR Blue Pure 311i Max has higher CADR (365 vs 252 CFM).
Which purifier is quieter?
BLUEAIR Blue Pure 311i Max is quieter (23 vs 40 dB).
Which purifier covers a larger room?
BLUEAIR Blue Pure 311i Max fits a larger room (about 566 vs 391 sq ft recommended from CADR).
Which purifier has better smart features?
Both list smart features (None vs None).
Which purifier has longer filter life?
BLUEAIR Blue Pure 311i Max lists 9 months; Winix 5520 lists 12. Intervals are as published and are not converted to a single unit.
Bottom line
BLUEAIR Blue Pure 311i Max moves more air (CADR) and covers a larger room than Winix 5520.
| Metric | BLUEAIR Blue Pure 311i Max | Winix 5520 |
|---|---|---|
| CADR (smoke) | 365 CFM | 252 CFM |
| Recommended room size | 566 sq ft | 391 sq ft |
| Claimed coverage | 2107 sq ft | 1882 sq ft |
| Noise | 23 dB | 40 dB |
| Filter type | HEPASilent | True HEPA, AOC™ Carbon |
| Filter interval | 9 months | 12 |
| Smart features | None | None |