Dreame AirPursue PM20 moves more air (CADR) and covers a larger room than Blueair Blue Pure 211+.
Which purifier has higher CADR?
Dreame AirPursue PM20 has higher CADR (400 vs 350 CFM).
Which purifier is quieter?
Blueair Blue Pure 211+ is quieter (31 vs 60 dB).
Which purifier covers a larger room?
Dreame AirPursue PM20 fits a larger room (about 620 vs 543 sq ft recommended from CADR).
Which purifier has better smart features?
Neither lists Wi-Fi or app control in our sources.
Which purifier has longer filter life?
Filter replacement interval is not published for either model.
Bottom line
Dreame AirPursue PM20 moves more air (CADR) and covers a larger room than Blueair Blue Pure 211+.
| Metric | Dreame AirPursue PM20 | Blueair Blue Pure 211+ |
|---|---|---|
| CADR (smoke) | 400 CFM | 350 CFM |
| Recommended room size | 620 sq ft | 543 sq ft |
| Claimed coverage | 7534 sq ft | — |
| Noise | 60 dB | 31 dB |
| Filter type | HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp | HEPASilent |
| Filter interval | — | — |
| Smart features | None | None |