Blueair Blue Pure 511 Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 22, 2026
Overview
The Blueair Blue Pure 511 delivers powerful filtration in a sleek, compact unit ideal for small rooms.
CADR and room size
CADR (smoke): 123 CFM.
What room size is the Blueair Blue Pure 511 suitable for?
Recommended room size based on CADR: about 191 sq ft (CADR × 1.55).
Validated coverage from documentation: 189 sq ft.
Manufacturer claimed coverage: 189 sq ft.
Filtration
What filter does it use?
HEPASilent.
Replacement interval: 6 months.
Noise
How loud is it?
Minimum reported noise: 24 dB.
Smart features
Does it have Wi-Fi?
No published Wi-Fi or app control in our sources.
Compact & space‑saving design, Simple one‑button control, Whisper‑quiet operation, Energy‑efficient (2‑16 W)
Specifications
- CADR (smoke)
- 123 CFM
- Recommended room size
- 191 sq ft
- Validated coverage
- 189 sq ft
- Manufacturer claimed coverage
- 189 sq ft
- Noise
- 24 dB
- Filter type
- HEPASilent
- Filter replacement interval
- 6 months
- Power
- 16 W
- Dimensions
- 13.4" x 7.9" x 7.9"
- Weight
- 4.2 lb
- Wi-Fi / app
- No
Comparisons
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.