Blueair Blue Signature Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 22, 2026
Overview
Blueair Blue Signature air purifier cleans large rooms up to 3,385 sq ft with HEPASilent filtration, smart VOC sensor, and Wi‑Fi control.
CADR and room size
CADR (smoke): 455 CFM.
What room size is the Blueair Blue Signature suitable for?
Recommended room size based on CADR: about 705 sq ft (CADR × 1.55).
Manufacturer claimed coverage: 3385 sq ft. This claim is higher than 3× CADR, so it is not used for ranking.
Filtration
What filter does it use?
HEPASilent.
Replacement interval: 179.99.
Noise
How loud is it?
Minimum reported noise: 23 dB.
Smart features
Does it have Wi-Fi?
Yes — app or Wi-Fi features are listed.
7 stages of filtration, 10x more odor removal, Smart VOC sensor, Dynamic display
Specifications
- CADR (smoke)
- 455 CFM
- Recommended room size
- 705 sq ft
- Manufacturer claimed coverage
- 3385 sq ft
- Noise
- 23 dB
- Filter type
- HEPASilent
- Filter replacement interval
- 179.99
- Power
- 42
- Dimensions
- 17.2 x 15.5 x 15.5
- Weight
- 13.2
- Wi-Fi / app
- Yes
Comparisons
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.