Blueair Blue Signature moves more air (CADR) and covers a larger room than Shark BreatheClear Smart Air Purifier.
Which purifier has higher CADR?
Blueair Blue Signature has published CADR; Shark BreatheClear Smart Air Purifier does not.
Which purifier is quieter?
Blueair Blue Signature lists a minimum of 23 dB; Shark BreatheClear Smart Air Purifier has no published figure.
Which purifier covers a larger room?
Blueair Blue Signature is recommended for about 705 sq ft based on CADR.
Which purifier has better smart features?
Blueair Blue Signature lists Wi-Fi or app control; Shark BreatheClear Smart Air Purifier does not.
Which purifier has longer filter life?
Blueair Blue Signature lists 179.99; Shark BreatheClear Smart Air Purifier lists up to 6 years. Intervals are as published and are not converted to a single unit.
Bottom line
Blueair Blue Signature moves more air (CADR) and covers a larger room than Shark BreatheClear Smart Air Purifier.
| Metric | Blueair Blue Signature | Shark BreatheClear Smart Air Purifier |
|---|---|---|
| CADR (smoke) | 455 CFM | — |
| Recommended room size | 705 sq ft | — |
| Claimed coverage | 3385 sq ft | 750 sq ft |
| Noise | 23 dB | — |
| Filter type | HEPASilent | HEPA-exceeding |
| Filter interval | 179.99 | up to 6 years |
| Smart features | None | None |