Choose Blueair Blue Pure 211+ for higher CADR and larger-room coverage and lower noise.
Which purifier has higher CADR?
The Blueair Blue Pure 211+ has a smoke CADR of 350 CFM versus 300 CFM for the Honeywell HPA300, a difference of 17%.
Which purifier is quieter?
Blueair Blue Pure 211+ is quieter (31 vs 53 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?
Neither lists Wi-Fi or app control in our sources.
Which purifier has better filtration?
Blueair Blue Pure 211+ lists HEPASilent; Honeywell HPA300 lists True HEPA.
Bottom line
Choose Blueair Blue Pure 211+ for higher CADR and larger-room coverage and lower noise.
| Metric | Blueair Blue Pure 211+ | Honeywell HPA300 | 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 | 53 dB | Blueair Blue Pure 211+ |
| Filter type | HEPASilent | True HEPA | — |
| Wi-Fi / app | No | No | — |