Choose Blueair Blue Pure 311i Max 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 365 CFM for the Blueair Blue Pure 311i Max, a difference of 4%.
Which purifier is quieter?
Blueair Blue Pure 311i Max is quieter (23 vs 46 dB).
Which purifier covers a larger room?
Medify Air MA-40 fits a larger room (about 589 vs 566 sq ft recommended from CADR).
Which purifier has better smart features?
Blueair Blue Pure 311i Max lists Wi-Fi or app control; Medify Air MA-40 does not.
Which purifier has better filtration?
Medify Air MA-40 lists HEPA H14; Blueair Blue Pure 311i Max lists HEPASilent.
Bottom line
Choose Blueair Blue Pure 311i Max if you want lower noise and Wi-Fi or app control.
| Metric | Medify Air MA-40 | Blueair Blue Pure 311i Max | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 380 CFM | 365 CFM | Medify Air MA-40 (+4%) |
| Recommended room size | 589 sq ft | 566 sq ft | Medify Air MA-40 (+4%) |
| Manufacturer claimed coverage | 1793 sq ft | 2107 sq ft | — |
| Minimum noise | 46 dB | 23 dB | Blueair Blue Pure 311i Max |
| Filter type | HEPA H14 | HEPASilent | — |
| Replacement interval | 4-5 months | 9 months | — |
| Power | 54W | 32 W | — |
| Wi-Fi / app | No | Yes | — |
| Dimensions | — | 19 × 12.5 × 12.5 in | — |
| Weight | 15.6 lb | 7.8 lb | — |