Dreame AirPursue PM20 moves more air (CADR) and covers a larger room than BLUEAIR Blue Signature SP3i.
Which purifier has higher CADR?
Dreame AirPursue PM20 has higher CADR (400 vs 321 CFM).
Which purifier is quieter?
BLUEAIR Blue Signature SP3i is quieter (54 vs 60 dB).
Which purifier covers a larger room?
Dreame AirPursue PM20 fits a larger room (about 620 vs 498 sq ft recommended from CADR).
Which purifier has better smart features?
BLUEAIR Blue Signature SP3i lists Wi-Fi or app control; Dreame AirPursue PM20 does not.
Which purifier has longer filter life?
BLUEAIR Blue Signature SP3i lists a replacement interval of 1; Dreame AirPursue PM20 does not.
Bottom line
Dreame AirPursue PM20 moves more air (CADR) and covers a larger room than BLUEAIR Blue Signature SP3i.
| Metric | Dreame AirPursue PM20 | BLUEAIR Blue Signature SP3i |
|---|---|---|
| CADR (smoke) | 400 CFM | 321 CFM |
| Recommended room size | 620 sq ft | 498 sq ft |
| Claimed coverage | 7534 sq ft | 2250 sq ft |
| Noise | 60 dB | 54 dB |
| Filter type | HEPA-13, carbon, NANO filter, charcoal filter, photocatalyst UV lamp | HEPASilent |
| Filter interval | — | 1 |
| Smart features | None | None |
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