Blueair Blue Signature moves more air (CADR) and covers a larger room than BLUEAIR Blue Signature Small.
Which purifier has higher CADR?
Blueair Blue Signature has higher CADR (455 vs 160 CFM).
Which purifier is quieter?
Blueair Blue Signature is quieter (23 vs 50 dB).
Which purifier covers a larger room?
Blueair Blue Signature fits a larger room (about 705 vs 248 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 a replacement interval of 179.99; BLUEAIR Blue Signature Small does not.
Bottom line
Blueair Blue Signature moves more air (CADR) and covers a larger room than BLUEAIR Blue Signature Small.
| Metric | Blueair Blue Signature | BLUEAIR Blue Signature Small |
|---|---|---|
| CADR (smoke) | 455 CFM | 160 CFM |
| Recommended room size | 705 sq ft | 248 sq ft |
| Claimed coverage | 3385 sq ft | 248 sq ft |
| Noise | 23 dB | 50 dB |
| Filter type | HEPASilent | HEPASilent |
| Filter interval | 179.99 | — |
| Smart features | None | None |