Blueair Blue Signature moves more air (CADR) and covers a larger room than Medify Air MA-40.
Which purifier has higher CADR?
Blueair Blue Signature has higher CADR (455 vs 380 CFM).
Which purifier is quieter?
Blueair Blue Signature is quieter (23 vs 46 dB).
Which purifier covers a larger room?
Blueair Blue Signature fits a larger room (about 705 vs 589 sq ft recommended from CADR).
Which purifier has better smart features?
Blueair Blue Signature lists Wi-Fi or app control; Medify Air MA-40 does not.
Which purifier has longer filter life?
Blueair Blue Signature lists 179.99; Medify Air MA-40 lists 4-5 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 Medify Air MA-40.
| Metric | Blueair Blue Signature | Medify Air MA-40 |
|---|---|---|
| CADR (smoke) | 455 CFM | 380 CFM |
| Recommended room size | 705 sq ft | 589 sq ft |
| Claimed coverage | 3385 sq ft | 1793 sq ft |
| Noise | 23 dB | 46 dB |
| Filter type | HEPASilent | HEPA H14 |
| Filter interval | 179.99 | 4-5 months |
| Smart features | None | None |