Choose Blueair Blue Signature for higher CADR and larger-room coverage, lower noise, and Wi-Fi or app control.
Which purifier has higher CADR?
The Blueair Blue Signature has a smoke CADR of 455 CFM versus 400 CFM for the Dreame AirPursue PM20, a difference of 14%.
Which purifier is quieter?
Blueair Blue Signature is quieter (23 vs 60 dB).
Which purifier covers a larger room?
Blueair Blue Signature fits a larger room (about 705 vs 620 sq ft recommended from CADR).
Which purifier has better smart features?
Blueair Blue Signature lists Wi-Fi or app control; Dreame AirPursue PM20 does not.
Which purifier has better filtration?
Blueair Blue Signature lists HEPASilent; Dreame AirPursue PM20 lists HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp.
Bottom line
Choose Blueair Blue Signature for higher CADR and larger-room coverage, lower noise, and Wi-Fi or app control.
| Metric | Blueair Blue Signature | Dreame AirPursue PM20 | Difference / Winner |
|---|---|---|---|
| Smoke CADR | 455 CFM | 400 CFM | Blueair Blue Signature (+14%) |
| Recommended room size | 705 sq ft | 620 sq ft | Blueair Blue Signature (+14%) |
| Manufacturer claimed coverage | 3385 sq ft | 7534 sq ft | — |
| Minimum noise | 23 dB | 60 dB | Blueair Blue Signature |
| Filter type | HEPASilent | HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp | — |
| Power | 42 W | — | — |
| Wi-Fi / app | Yes | No | — |
| Dimensions | 17.2 × 15.5 × 15.5 in | 14.9 × 14.9 × 33.4 in | — |
| Weight | 13.2 lb | — | — |