Choose Blueair Blue Pure 211i Max for higher CADR and larger-room coverage and lower noise.
Which purifier has higher CADR?
The Blueair Blue Pure 211i Max has a smoke CADR of 435 CFM versus 300 CFM for the Dreo DR-HAP009, a difference of 45%.
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 (Captures 99.97% of particles as small as 0.1 microns, RealTrack technology for filter lifetime tracking, WiFi connectivity with smart features vs app, Alexa).
Which purifier has better filtration?
Blueair Blue Pure 211i Max lists HEPASilent; Dreo DR-HAP009 lists True HEPA H13.
Bottom line
Choose Blueair Blue Pure 211i Max for higher CADR and larger-room coverage and lower noise.
| Metric | Blueair Blue Pure 211i Max | Dreo DR-HAP009 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 435 CFM | 300 CFM | Blueair Blue Pure 211i Max (+45%) |
| Recommended room size | 674 sq ft | 465 sq ft | Blueair Blue Pure 211i Max (+45%) |
| Manufacturer claimed coverage | 3235 sq ft | — | — |
| Minimum noise | 23 dB | 24 dB | Blueair Blue Pure 211i Max |
| Filter type | HEPASilent | True HEPA H13 | — |
| Power | 46 W | — | — |
| Wi-Fi / app | Yes | Yes | — |
| Dimensions | 22.7 × 14.4 × 14.4 in | — | — |
| Weight | 16.2 lb | — | — |