FreAire B0HBJ3N8BD moves more air (CADR) and covers a larger room than FreAire KN-6391RGB.
Which purifier has higher CADR?
FreAire B0HBJ3N8BD has published CADR; FreAire KN-6391RGB does not.
Which purifier is quieter?
FreAire B0HBJ3N8BD lists a minimum of 22 dB; FreAire KN-6391RGB has no published figure.
Which purifier covers a larger room?
FreAire B0HBJ3N8BD is recommended for about 866 sq ft based on CADR.
Which purifier has better smart features?
FreAire B0HBJ3N8BD lists Wi-Fi or app control; FreAire KN-6391RGB does not.
Which purifier has longer filter life?
FreAire B0HBJ3N8BD lists a replacement interval of 19 months; FreAire KN-6391RGB does not.
Bottom line
FreAire B0HBJ3N8BD moves more air (CADR) and covers a larger room than FreAire KN-6391RGB.
| Metric | FreAire B0HBJ3N8BD | FreAire KN-6391RGB |
|---|---|---|
| CADR (smoke) | 559 CFM | — |
| Recommended room size | 866 sq ft | — |
| Claimed coverage | 2390 sq ft | 1086 sq ft |
| Noise | 22 dB | — |
| Filter type | HEPA | — |
| Filter interval | 19 months | — |
| Smart features | None | None |