Choose Blueair Blue Pure 511i Max for higher CADR and larger-room coverage, lower noise, and Wi-Fi or app control.
Which purifier has higher CADR?
The Blueair Blue Pure 511i Max has a smoke CADR of 174 CFM versus 152 CFM for the Coway Airmega 150, a difference of 14%.
Which purifier is quieter?
Blueair Blue Pure 511i Max is quieter (19 vs 40 dB).
Which purifier covers a larger room?
Blueair Blue Pure 511i Max fits a larger room (about 270 vs 237 sq ft recommended from CADR).
Which purifier has better smart features?
Blueair Blue Pure 511i Max lists Wi-Fi or app control; Coway Airmega 150 does not.
Which purifier has better filtration?
Blueair Blue Pure 511i Max lists HEPASilent; Coway Airmega 150 lists HEPA, Carbon.
Bottom line
Choose Blueair Blue Pure 511i Max for higher CADR and larger-room coverage, lower noise, and Wi-Fi or app control.
| Metric | Blueair Blue Pure 511i Max | Coway Airmega 150 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 174 CFM | 152.8 CFM | Blueair Blue Pure 511i Max (+14%) |
| Recommended room size | 270 sq ft | 237 sq ft | Blueair Blue Pure 511i Max (+14%) |
| Manufacturer claimed coverage | 465 sq ft | 1035 sq ft | — |
| Minimum noise | 19 dB | 40 dB | Blueair Blue Pure 511i Max |
| Filter type | HEPASilent | HEPA, Carbon | — |
| Replacement interval | — | 12 months | — |
| Power | 17 W | 35 W | — |
| Wi-Fi / app | Yes | No | — |
| Dimensions | — | 13.4 × 6.5 × 18.5 in | — |
| Weight | 4.2 lb | 12.1 lb | — |