Filter B
Best annual maintenance kit for allergy-prone households using compatible air purifiers.
Maintain optimal indoor air quality with the Winix Filter B, a comprehensive one-year replacement filter set. This filter effectively captures 99.97% of airborne particles as small as 0.3 microns, including dust, pollen, pet dander, smoke, and mold spores. It features a washable pre-filter for larger particles and a washable activated carbon filter to eliminate common household odors from cooking and smoking. Designed for specific Winix air purifier models, its washable components offer a cost-effective and eco-friendly solution for continuous, high-performance air purification in your home.
$38.99
Owner Satisfaction
4.6
/ 5
Category Rank
138
/ 1670
#138 in Electronics Accessories
Price vs Category Average
-76%
Below average
Filter Type
Washable Pre-filter, True HEPA, Washable Activated Carbon
/ Washable Pre-filter, True HEPA, Washable Activated Carbon
Who it's for
- Allergy sufferers needing high-efficiency particle filtration
- Busy homeowners preferring low-maintenance annual replacements
- Pet owners seeking effective household odor neutralization
Who should skip it
- Budget-conscious shoppers looking for affordable third-party options
- Users wanting a completely hands-off maintenance experience
- Shoppers prone to confusion regarding specific model compatibility
Performance breakdown
Filtration Efficiency
True HEPA technology reliably captures microscopic particles down to 0.3 microns.
Odor Neutralization
Activated carbon pellets effectively scrub common household cooking and smoke odors.
Maintenance Versatility
Washable pre-filter and carbon components extend the life of your system.
Longevity
A full year of filtration provides excellent value and consistent performance.
Installation Ease
Designed for a seamless, frustration-free fit in compatible Winix units.
Eco-Friendliness
Washable components reduce waste compared to strictly disposable filter alternatives.
Key Specs
Filter Type
Washable Pre-filter, True HEPA, Washable Activated Carbon
HEPA Efficiency
Captures 99.97% of particles as small as 0.3 microns
Filter Lifespan
12 months
Washable Components
Yes
Compatible Air Purifier Models
Winix 9500, U300, P300, WAC9000, WAC9500, WAC5000, WAC5000b, WAC5300, WAC6300, WAC5500, Winix 5500-2
Filter Shape
Rectangular
Pack Quantity
1
Dimensions
16.4" H x 12.5" W x 2.5" D
Features
- Captures 99.97% of airborne particles
- Washable pre-filter and carbon filter
- Eliminates common household odors
- Provides one year of filtration
- Designed for specific Winix models
- Cost-effective and eco-friendly
- Easy to install and maintain
- Ensures optimal air purifier performance
What customers say
Customers consistently praise the Winix Filter B for its exceptional quality and straightforward installation. Users find the filter replacement process remarkably easy, requiring no tools or complicated steps. The consensus is that using the genuine Winix product ensures the air purifier operates at peak efficiency, effectively capturing odors and fine particulates. While some note the cost is higher than generic options, the reliable performance and perfect fit solidify its strong value proposition, making it the preferred choice for maintaining air quality standards.
Know before you buy
The Filter B set is designed to last for 12 months under normal operating conditions. Replacing the filters annually ensures your air purifier continues to capture 99.97% of airborne particles effectively.
This filter is compatible with several models, including the Winix 9500, U300, P300, 5500-2, and the WAC series (5000, 5000b, 5300, 5500, 6300, 9000, and 9500).
Yes, the pre-filter and the activated carbon filter are washable. This helps extend the life of the components and maintain efficient airflow between full replacements.
Yes, the included activated carbon filter uses carbon pellets to neutralize common household odors, such as those from cooking, pets, or smoke.
The True HEPA filter is rated to capture 99.97% of airborne particles as small as 0.3 microns. This includes common allergens like dust, pollen, pet dander, and mold spores.
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