Choose Blueair Blue Signature SP3i for higher CADR and larger-room coverage. Choose Dreo DR-HAP009 if you want lower noise.
Which purifier has higher CADR?
The Blueair Blue Signature SP3i has a smoke CADR of 321 CFM versus 300 CFM for the Dreo DR-HAP009, a difference of 7%.
Which purifier is quieter?
Dreo DR-HAP009 is quieter (24 vs 54 dB).
Which purifier covers a larger room?
Blueair Blue Signature SP3i fits a larger room (about 498 vs 465 sq ft recommended from CADR).
Which purifier has better smart features?
Both list smart features (WiFi Smart Control, Auto Mode, Odor & Smoke Removal, AHAM Verified vs app, Alexa).
Which purifier has better filtration?
Blueair Blue Signature SP3i lists HEPASilent; Dreo DR-HAP009 lists True HEPA H13.
Bottom line
Choose Blueair Blue Signature SP3i for higher CADR and larger-room coverage. Choose Dreo DR-HAP009 if you want lower noise.
| Metric | Blueair Blue Signature SP3i | Dreo DR-HAP009 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 321 CFM | 300 CFM | Blueair Blue Signature SP3i (+7%) |
| Recommended room size | 498 sq ft | 465 sq ft | Blueair Blue Signature SP3i (+7%) |
| Manufacturer claimed coverage | 2250 sq ft | — | — |
| Minimum noise | 54 dB | 24 dB | Dreo DR-HAP009 |
| Filter type | HEPASilent | True HEPA H13 | — |
| Power | 36 W | — | — |
| Wi-Fi / app | Yes | Yes | — |
| Weight | 9.5 lb | — | — |