Honeywell HPA125B Air Purifier: CADR, Noise, Coverage & Specs
Last updated: Aug 23, 2026
Overview
Honeywell Allergen Plus Compact HEPA Small Room Air Purifier covers up to 530 sq ft with 99.97% allergen removal.
CADR and room size
CADR (smoke): 250 CFM.
What room size is the Honeywell HPA125B suitable for?
Recommended room size based on CADR: about 388 sq ft (CADR × 1.55).
Validated coverage from documentation: 530 sq ft.
Manufacturer claimed coverage: 530 sq ft.
Filtration
What filter does it use?
HEPA.
Noise
How loud is it?
Minimum reported noise: 21 dB.
Smart features
Does it have Wi-Fi?
No published Wi-Fi or app control in our sources.
Captures 99.97% of allergens, 3-in-1 filtration, AQSense Auto Mode, AHAM certified
Specifications
- CADR (smoke)
- 250 CFM
- Recommended room size
- 388 sq ft
- Validated coverage
- 530 sq ft
- Manufacturer claimed coverage
- 530 sq ft
- Noise
- 21 dB
- Filter type
- HEPA
- Dimensions
- 7"D x 7"W x 11"H
- Weight
- 2.1
- Wi-Fi / app
- No
Comparisons
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources. See methodology.