Winix 5520 Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 22, 2026
Overview
The Winix 5520 purifies large rooms up to 1882 ft² in an hour with True HEPA, carbon filter, Wi‑Fi and an air‑quality monitor.
CADR and room size
CADR (smoke): 252 CFM.
What room size is the Winix 5520 suitable for?
Recommended room size based on CADR: about 391 sq ft (CADR × 1.55).
Manufacturer claimed coverage: 1882 sq ft. This claim is higher than 3× CADR, so it is not used for ranking.
Filtration
What filter does it use?
True HEPA, AOC™ Carbon.
Replacement interval: 12.
Noise
How loud is it?
Minimum reported noise: 40 dB.
Smart features
Does it have Wi-Fi?
Yes — app or Wi-Fi features are listed.
4‑Stage filtration, Wi‑Fi & Alexa control, True HEPA filter, AOC™ carbon filter
Specifications
- CADR (smoke)
- 252 CFM
- Recommended room size
- 391 sq ft
- Manufacturer claimed coverage
- 1882 sq ft
- Noise
- 40 dB
- Filter type
- True HEPA, AOC™ Carbon
- Filter replacement interval
- 12
- Power
- 50
- Dimensions
- 13.59×8.27×22.17 in
- Weight
- 13.3
- Wi-Fi / app
- Yes
Comparisons
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.