Dreame AirPursue PM20 moves more air (CADR) and covers a larger room than Medify Air MA-40.
Which purifier has higher CADR?
Dreame AirPursue PM20 has higher CADR (400 vs 380 CFM).
Which purifier is quieter?
Medify Air MA-40 is quieter (46 vs 60 dB).
Which purifier covers a larger room?
Dreame AirPursue PM20 fits a larger room (about 620 vs 589 sq ft recommended from CADR).
Which purifier has better smart features?
Neither lists Wi-Fi or app control in our sources.
Which purifier has longer filter life?
Medify Air MA-40 lists a replacement interval of 4-5 months; Dreame AirPursue PM20 does not.
Bottom line
Dreame AirPursue PM20 moves more air (CADR) and covers a larger room than Medify Air MA-40.
| Metric | Dreame AirPursue PM20 | Medify Air MA-40 |
|---|---|---|
| CADR (smoke) | 400 CFM | 380 CFM |
| Recommended room size | 620 sq ft | 589 sq ft |
| Claimed coverage | 7534 sq ft | 1793 sq ft |
| Noise | 60 dB | 46 dB |
| Filter type | HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp | HEPA H14 |
| Filter interval | — | 4-5 months |
| Smart features | None | None |