Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than Winix 5520.
Which purifier has higher CADR?
Blueair Blue Pure 211i Max has higher CADR (435 vs 252 CFM).
Which purifier is quieter?
Blueair Blue Pure 211i Max is quieter (23 vs 40 dB).
Which purifier covers a larger room?
Blueair Blue Pure 211i Max fits a larger room (about 674 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?
Winix 5520 lists a replacement interval of 12; Blueair Blue Pure 211i Max does not.
Bottom line
Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than Winix 5520.
| Metric | Blueair Blue Pure 211i Max | Winix 5520 |
|---|---|---|
| CADR (smoke) | 435 CFM | 252 CFM |
| Recommended room size | 674 sq ft | 391 sq ft |
| Claimed coverage | 3235 sq ft | 1882 sq ft |
| Noise | 23 dB | 40 dB |
| Filter type | HEPASilent | True HEPA, AOC™ Carbon |
| Filter interval | — | 12 |
| Smart features | None | None |