Blueair Blue Signature moves more air (CADR) and covers a larger room than Winix 5520.
Which purifier has higher CADR?
Blueair Blue Signature has higher CADR (455 vs 252 CFM).
Which purifier is quieter?
Blueair Blue Signature is quieter (23 vs 40 dB).
Which purifier covers a larger room?
Blueair Blue Signature fits a larger room (about 705 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 Signature lists 179.99; Winix 5520 lists 12. Intervals are as published and are not converted to a single unit.
Bottom line
Blueair Blue Signature moves more air (CADR) and covers a larger room than Winix 5520.
| Metric | Blueair Blue Signature | Winix 5520 |
|---|---|---|
| CADR (smoke) | 455 CFM | 252 CFM |
| Recommended room size | 705 sq ft | 391 sq ft |
| Claimed coverage | 3385 sq ft | 1882 sq ft |
| Noise | 23 dB | 40 dB |
| Filter type | HEPASilent | True HEPA, AOC™ Carbon |
| Filter interval | 179.99 | 12 |
| Smart features | None | None |