Choose Blueair Blue Pure 211+ for higher CADR and larger-room coverage. Choose Dreo DR-HAP009 if you want lower noise and Wi-Fi or app control.
Which purifier has higher CADR?
The Blueair Blue Pure 211+ has a smoke CADR of 350 CFM versus 300 CFM for the Dreo DR-HAP009, a difference of 17%.
Which purifier is quieter?
Dreo DR-HAP009 is quieter (24 vs 31 dB).
Which purifier covers a larger room?
Blueair Blue Pure 211+ fits a larger room (about 543 vs 465 sq ft recommended from CADR).
Which purifier has better smart features?
Dreo DR-HAP009 lists Wi-Fi or app control; Blueair Blue Pure 211+ does not.
Which purifier has better filtration?
Blueair Blue Pure 211+ lists HEPASilent; Dreo DR-HAP009 lists True HEPA H13.
Bottom line
Choose Blueair Blue Pure 211+ for higher CADR and larger-room coverage. Choose Dreo DR-HAP009 if you want lower noise and Wi-Fi or app control.
| Metric | Blueair Blue Pure 211+ | Dreo DR-HAP009 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 350 CFM | 300 CFM | Blueair Blue Pure 211+ (+17%) |
| Recommended room size | 543 sq ft | 465 sq ft | Blueair Blue Pure 211+ (+17%) |
| Minimum noise | 31 dB | 24 dB | Dreo DR-HAP009 |
| Filter type | HEPASilent | True HEPA H13 | — |
| Wi-Fi / app | No | Yes | — |