
Winix A Air Filter
Score: 88/100
Blueair Blue Pure AllergenBlock Replacement Filter
Score: 88/100
Rankings

The Winix 115115 is a genuine OEM replacement filter set featuring H13 True HEPA filtration that captures 99.99% of particles down to 0.003 microns. It includes four activated carbon pre-filters for a full year of odor reduction, though the non-washable design and higher upfront cost are notable trade-offs. Best suited for pet owners and allergy sufferers who prioritize maximum filtration efficiency and warranty compliance.

The Blueair Blue Pure AllergenBlock Filter is a specialized replacement filter designed exclusively for the Blue Pure 211i Max air purifier. It features an AllergenBlock Defense Coating that neutralizes over 90% of allergen properties and captures 99.97% of particles down to 0.1 microns. Best suited for allergy and asthma sufferers or pet owners in homes up to 674 sq ft needing allergen neutralization beyond basic capture.
| Attribute | ![]() | ![]() |
|---|---|---|
12 monthsbest | 7.5 months | |
— | 674 sq_ftbest | |
— | 410 cfmbest | |
99.99 percentbest | 99.97 percent | |
| ↓ lower better | 0.003 micronsbest | 0.1 microns |
2 | 4best | |
| ↓ lower better | 1.1 lbsbest | 2.15 lbs |
5best | 1 |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | 5300, 5300-2, 5500, 5500-2, 6300, 6300-2, P300, C535, AM90, C909, 9500, 9800 | Blue Pure 211i Max |
Maintenance & Lifespan(2) | ||
Replacement Interval (months) | 12 months | 7.5 months |
Washable | false | true |
Compliance & Safety(1) | ||
Certifications | Energy Star, Recyclable | |
Physical & Packaging(3) | ||
Weight (lbs) | 1.1 lbs | 2.15 lbs |
Dimensions | 16.6 x 14.1 x 2.2 | 10.0 x 4.7 x 20.7 |
Package Quantity | 5 | 1 |
Filtration Performance(9) | ||
Filtration Standard | H13 True HEPA | HEPASilent |
Coverage Area (sq_ft) | sq_ft | 674 sq_ft |
Clean Air Delivery Rate (cfm) | cfm | 410 cfm |
Filtration Efficiency (percent) | 99.99 percent | 99.97 percent |
Minimum Particle Size Captured (microns) | 0.003 microns | 0.1 microns |
Filter Stages | 2 | 4 |
Target Contaminants | VOCs, Odors, Particles, Allergens, Smoke | Allergens, VOCs, Odors |
Air Changes Per Hour (ach) | ach | 4.8 ach |
Pre-Filter Type | Activated Carbon | |


Professional sources emphasize the genuine component advantage, noting that Winix America's official product page highlights engineered optimization for airflow and particle capture. The True HEPA distinction is a key differentiator, with specifications exceeding competitor claims by capturing particles down to 0.003 microns rather than the standard 0.3 microns.
Users consistently report noticeable air quality improvements and appreciate the convenience of a true one-year supply that reduces oversight. Installation is generally described as easy with clear instructions. However, recurring complaints focus on price point shock regarding original pricing, filter availability issues causing frustration during urgent needs, and confusion over model-specific installation requirements for certain units.




Professional reviewers and editors highlight the AllergenBlock filter as a specialized solution for allergy sufferers, emphasizing its ability to neutralize rather than just trap allergens like pollen and pet dander. Editors note that it outperforms original filters in allergen protection while maintaining effective odor control through HEPASilent technology.
Everyday users describe the filter as a game-changer for easy replacement on the 211 series, praising its ability to keep air pure effortlessly. Common themes include reliable longevity and recyclability, though users emphasize the critical need to match the exact purifier model to maintain performance.