Blueair Blue Signature moves more air (CADR) and covers a larger room than BLUEAIR Blue Pure 411i Max.
Which purifier has higher CADR?
Blueair Blue Signature has higher CADR (455 vs 141 CFM).
Which purifier is quieter?
BLUEAIR Blue Pure 411i Max is quieter (18 vs 23 dB).
Which purifier covers a larger room?
Blueair Blue Signature fits a larger room (about 705 vs 219 sq ft recommended from CADR).
Which purifier has better smart features?
Both list smart features (None vs None).
Which purifier has longer filter life?
Blueair Blue Signature lists 179.99; BLUEAIR Blue Pure 411i Max lists 6-8 months. Intervals are as published and are not converted to a single unit.
Bottom line
Blueair Blue Signature moves more air (CADR) and covers a larger room than BLUEAIR Blue Pure 411i Max.
| Metric | Blueair Blue Signature | BLUEAIR Blue Pure 411i Max |
|---|---|---|
| CADR (smoke) | 455 CFM | 141 CFM |
| Recommended room size | 705 sq ft | 219 sq ft |
| Claimed coverage | 3385 sq ft | 1080 sq ft |
| Noise | 23 dB | 18 dB |
| Filter type | HEPASilent | HEPASilent |
| Filter interval | 179.99 | 6-8 months |
| Smart features | None | None |