Choose Medify Air MA-40 for higher CADR and larger-room coverage. Choose Alen 45i if you want lower noise and Wi-Fi or app control.
Which purifier has higher CADR?
The Medify Air MA-40 has a smoke CADR of 380 CFM versus 255 CFM for the Alen 45i, a difference of 49%.
Which purifier is quieter?
Alen 45i is quieter (23 vs 46 dB).
Which purifier covers a larger room?
Medify Air MA-40 fits a larger room (about 589 vs 395 sq ft recommended from CADR).
Which purifier has better smart features?
Alen 45i lists Wi-Fi or app control; Medify Air MA-40 does not.
Which purifier has better filtration?
Medify Air MA-40 lists HEPA H14; Alen 45i lists HEPA.
Bottom line
Choose Medify Air MA-40 for higher CADR and larger-room coverage. Choose Alen 45i if you want lower noise and Wi-Fi or app control.
| Metric | Medify Air MA-40 | Alen 45i | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 380 CFM | 255 CFM | Medify Air MA-40 (+49%) |
| Recommended room size | 589 sq ft | 395 sq ft | Medify Air MA-40 (+49%) |
| Manufacturer claimed coverage | 1793 sq ft | 1900 sq ft | — |
| Minimum noise | 46 dB | 23 dB | Alen 45i |
| Filter type | HEPA H14 | HEPA | — |
| Replacement interval | 4-5 months | — | — |
| Power | 54W | — | — |
| Wi-Fi / app | No | Yes | — |
| Weight | 15.6 lb | 14 lb | — |