BLUEAIR Blue Pure 511i Max Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 22, 2026
Overview
Advanced air purification for small rooms with quiet operation and smart features.
CADR and room size
CADR (smoke): 174 CFM.
What room size is the BLUEAIR Blue Pure 511i Max suitable for?
Recommended room size based on CADR: about 270 sq ft (CADR × 1.55).
Validated coverage from documentation: 465 sq ft.
Manufacturer claimed coverage: 465 sq ft.
Filtration
What filter does it use?
HEPASilent.
Replacement interval: 9.
Noise
How loud is it?
Minimum reported noise: 19 dB.
Smart features
Does it have Wi-Fi?
Yes — app or Wi-Fi features are listed.
Wi-Fi capability, Smart sensor, Auto mode, Night mode
Specifications
- CADR (smoke)
- 174 CFM
- Recommended room size
- 270 sq ft
- Validated coverage
- 465 sq ft
- Manufacturer claimed coverage
- 465 sq ft
- Noise
- 19 dB
- Filter type
- HEPASilent
- Filter replacement interval
- 9
- Power
- 17
- Dimensions
- 14.5" x 9.3" x 9.3"
- Weight
- 4.2
- Wi-Fi / app
- Yes
Comparisons
- FreAire B0HBJ3N8BD vs BLUEAIR Blue Pure 511i Max
- Blueair Blue Signature vs BLUEAIR Blue Pure 511i Max
- Blueair Blue Pure 211i Max vs BLUEAIR Blue Pure 511i Max
- Dreame AirPursue PM20 vs BLUEAIR Blue Pure 511i Max
- Medify Air MA-40 vs BLUEAIR Blue Pure 511i Max
- BLUEAIR Blue Pure 311i Max vs BLUEAIR Blue Pure 511i Max
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.