Choose Blueair Blue Pure 511 for higher CADR and larger-room coverage. Choose Frigidaire FHAP1020A1 if you want lower noise.
Which purifier has higher CADR?
The Blueair Blue Pure 511 has a smoke CADR of 123 CFM versus 115 CFM for the Frigidaire FHAP1020A1, a difference of 7%.
Which purifier is quieter?
Frigidaire FHAP1020A1 is quieter (20 vs 24 dB).
Which purifier covers a larger room?
Blueair Blue Pure 511 fits a larger room (about 191 vs 178 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?
Blueair Blue Pure 511 lists HEPASilent; Frigidaire FHAP1020A1 lists HEPA.
Bottom line
Choose Blueair Blue Pure 511 for higher CADR and larger-room coverage. Choose Frigidaire FHAP1020A1 if you want lower noise.
| Metric | Blueair Blue Pure 511 | Frigidaire FHAP1020A1 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 123 CFM | 115 CFM | Blueair Blue Pure 511 (+7%) |
| Recommended room size | 191 sq ft | 178 sq ft | Blueair Blue Pure 511 (+7%) |
| Manufacturer claimed coverage | 189 sq ft | 850 sq ft | — |
| Minimum noise | 24 dB | 20 dB | Frigidaire FHAP1020A1 |
| Filter type | HEPASilent | HEPA | — |
| Replacement interval | 6 months | 12 months | — |
| Power | 16 W | — | — |
| Wi-Fi / app | No | No | — |
| Weight | 4.2 lb | 7.5 lb | — |