Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than DREO DR-HAP009.
Which purifier has higher CADR?
Blueair Blue Pure 211i Max has higher CADR (435 vs 300 CFM).
Which purifier is quieter?
Blueair Blue Pure 211i Max is quieter (23 vs 24 dB).
Which purifier covers a larger room?
Blueair Blue Pure 211i Max fits a larger room (about 674 vs 465 sq ft recommended from CADR).
Which purifier has better smart features?
Both list smart features (None vs app, Alexa).
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 DREO DR-HAP009.
| Metric | Blueair Blue Pure 211i Max | DREO DR-HAP009 |
|---|---|---|
| CADR (smoke) | 435 CFM | 300 CFM |
| Recommended room size | 674 sq ft | 465 sq ft |
| Claimed coverage | 3235 sq ft | — |
| Noise | 23 dB | 24 dB |
| Filter type | HEPASilent | True HEPA H13 |
| Filter interval | — | — |
| Smart features | None | app, Alexa |