Blueair Blue Pure 211i Max moves more air (CADR) and covers a larger room than DREO DR-HAP009S.
Which purifier has higher CADR?
Blueair Blue Pure 211i Max has published CADR; DREO DR-HAP009S does not.
Which purifier is quieter?
DREO DR-HAP009S is quieter (18 vs 23 dB).
Which purifier covers a larger room?
Blueair Blue Pure 211i Max is recommended for about 674 sq ft based on 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 DREO DR-HAP009S.
| Metric | Blueair Blue Pure 211i Max | DREO DR-HAP009S |
|---|---|---|
| CADR (smoke) | 435 CFM | — |
| Recommended room size | 674 sq ft | — |
| Claimed coverage | 3235 sq ft | 1176 sq ft |
| Noise | 23 dB | 18 dB |
| Filter type | HEPASilent | 3-in-1 HEPA Filter (Pre-filter, HEPA, Activated Carbon) |
| Filter interval | — | — |
| Smart features | None | None |