BLUEAIR Blue Pure 311i Max Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 22, 2026
Overview
BLUEAIR Blue Pure 311i Max Smart Air Purifier for Medium Rooms up to 2,107 sq ft
CADR and room size
CADR (smoke): 365 CFM.
What room size is the BLUEAIR Blue Pure 311i Max suitable for?
Recommended room size based on CADR: about 566 sq ft (CADR × 1.55).
Manufacturer claimed coverage: 2107 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: 9 months.
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.
Removes 99.97% of airborne particles down to 0.1 microns, WiFi connectivity and auto-mode, LED air quality indicator, Ultra-quiet performance
Specifications
- CADR (smoke)
- 365 CFM
- Recommended room size
- 566 sq ft
- Manufacturer claimed coverage
- 2107 sq ft
- Noise
- 23 dB
- Filter type
- HEPASilent
- Filter replacement interval
- 9 months
- Power
- 32 W
- Dimensions
- 19 x 12.5 x 12.5 in
- Weight
- 7.8 lb
- Wi-Fi / app
- Yes
Comparisons
- FreAire B0HBJ3N8BD vs BLUEAIR Blue Pure 311i Max
- Blueair Blue Signature vs BLUEAIR Blue Pure 311i Max
- Blueair Blue Pure 211i Max vs BLUEAIR Blue Pure 311i Max
- Dreame AirPursue PM20 vs BLUEAIR Blue Pure 311i Max
- Medify Air MA-40 vs BLUEAIR Blue Pure 311i Max
- BLUEAIR Blue Pure 311i Max vs Levoit Core P350-P
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.