FreAire B0HBJ3N8BD moves more air (CADR) and covers a larger room than Blueair Blue Pure 511.
Which purifier has higher CADR?
FreAire B0HBJ3N8BD has higher CADR (559 vs 123 CFM).
Which purifier is quieter?
FreAire B0HBJ3N8BD is quieter (22 vs 24 dB).
Which purifier covers a larger room?
FreAire B0HBJ3N8BD fits a larger room (about 866 vs 191 sq ft recommended from CADR).
Which purifier has better smart features?
FreAire B0HBJ3N8BD lists Wi-Fi or app control; Blueair Blue Pure 511 does not.
Which purifier has longer filter life?
FreAire B0HBJ3N8BD lists 19 months; Blueair Blue Pure 511 lists 6 months. Intervals are as published and are not converted to a single unit.
Bottom line
FreAire B0HBJ3N8BD moves more air (CADR) and covers a larger room than Blueair Blue Pure 511.
| Metric | FreAire B0HBJ3N8BD | Blueair Blue Pure 511 |
|---|---|---|
| CADR (smoke) | 559 CFM | 123 CFM |
| Recommended room size | 866 sq ft | 191 sq ft |
| Claimed coverage | 2390 sq ft | 189 sq ft |
| Noise | 22 dB | 24 dB |
| Filter type | HEPA | HEPASilent |
| Filter interval | 19 months | 6 months |
| Smart features | None | None |