Choose Dreame AirPursue PM20 for higher CADR and larger-room coverage. Choose Medify Air MA-40 if you want lower noise.
Which purifier has higher CADR?
The Dreame AirPursue PM20 has a smoke CADR of 400 CFM versus 380 CFM for the Medify Air MA-40, a difference of 5%.
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 better filtration?
Dreame AirPursue PM20 lists HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp; Medify Air MA-40 lists HEPA H14.
Bottom line
Choose Dreame AirPursue PM20 for higher CADR and larger-room coverage. Choose Medify Air MA-40 if you want lower noise.
| Metric | Dreame AirPursue PM20 | Medify Air MA-40 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 400 CFM | 380 CFM | Dreame AirPursue PM20 (+5%) |
| Recommended room size | 620 sq ft | 589 sq ft | Dreame AirPursue PM20 (+5%) |
| Manufacturer claimed coverage | 7534 sq ft | 1793 sq ft | — |
| Minimum noise | 60 dB | 46 dB | Medify Air MA-40 |
| Filter type | HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp | HEPA H14 | — |
| Replacement interval | — | 4-5 months | — |
| Power | — | 54W | — |
| Wi-Fi / app | No | No | — |
| Dimensions | 14.9 × 14.9 × 33.4 in | — | — |
| Weight | — | 15.6 lb | — |