Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than Dreame AirPursue PM20.
Which purifier has higher CADR?
Blueair Blue Pure 211i Max has higher CADR (435 vs 400 CFM).
Which purifier is quieter?
Blueair Blue Pure 211i Max is quieter (23 vs 60 dB).
Which purifier covers a larger room?
Blueair Blue Pure 211i Max fits a larger room (about 674 vs 620 sq ft recommended from CADR).
Which purifier has better smart features?
Blueair Blue Pure 211i Max lists Wi-Fi or app control; Dreame AirPursue PM20 does not.
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 Dreame AirPursue PM20.
| Metric | Blueair Blue Pure 211i Max | Dreame AirPursue PM20 |
|---|---|---|
| CADR (smoke) | 435 CFM | 400 CFM |
| Recommended room size | 674 sq ft | 620 sq ft |
| Claimed coverage | 3235 sq ft | 7534 sq ft |
| Noise | 23 dB | 60 dB |
| Filter type | HEPASilent | HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp |
| Filter interval | — | — |
| Smart features | None | None |