BLUEAIR Blue Pure 311i Max and Blueair Blue Pure 211+ have similar CADR; BLUEAIR Blue Pure 311i Max is quieter.
Which purifier has higher CADR?
BLUEAIR Blue Pure 311i Max has higher CADR (365 vs 350 CFM).
Which purifier is quieter?
BLUEAIR Blue Pure 311i Max is quieter (23 vs 31 dB).
Which purifier covers a larger room?
BLUEAIR Blue Pure 311i Max fits a larger room (about 566 vs 543 sq ft recommended from CADR).
Which purifier has better smart features?
BLUEAIR Blue Pure 311i Max lists Wi-Fi or app control; Blueair Blue Pure 211+ does not.
Which purifier has longer filter life?
BLUEAIR Blue Pure 311i Max lists a replacement interval of 9 months; Blueair Blue Pure 211+ does not.
Bottom line
BLUEAIR Blue Pure 311i Max and Blueair Blue Pure 211+ have similar CADR; BLUEAIR Blue Pure 311i Max is quieter.
| Metric | BLUEAIR Blue Pure 311i Max | Blueair Blue Pure 211+ |
|---|---|---|
| CADR (smoke) | 365 CFM | 350 CFM |
| Recommended room size | 566 sq ft | 543 sq ft |
| Claimed coverage | 2107 sq ft | — |
| Noise | 23 dB | 31 dB |
| Filter type | HEPASilent | HEPASilent |
| Filter interval | 9 months | — |
| Smart features | None | None |
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