Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than BLUEAIR Blue Signature Small.
Which purifier has higher CADR?
Blueair Blue Pure 211i Max has higher CADR (435 vs 160 CFM).
Which purifier is quieter?
Blueair Blue Pure 211i Max is quieter (23 vs 50 dB).
Which purifier covers a larger room?
Blueair Blue Pure 211i Max fits a larger room (about 674 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?
Filter replacement interval is not published for either model.
Bottom line
Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than BLUEAIR Blue Signature Small.
| Metric | Blueair Blue Pure 211i Max | BLUEAIR Blue Signature Small |
|---|---|---|
| CADR (smoke) | 435 CFM | 160 CFM |
| Recommended room size | 674 sq ft | 248 sq ft |
| Claimed coverage | 3235 sq ft | 248 sq ft |
| Noise | 23 dB | 50 dB |
| Filter type | HEPASilent | HEPASilent |
| Filter interval | — | — |
| Smart features | None | None |
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