
Coway AIRMEGA Max 2 Filter
Score: 92/100
Blueair Blue Pure AllergenBlock Replacement Filter
Score: 88/100
Rankings

The Coway AIRMEGA Max2 Replacement Filter Set is a genuine, high-efficiency dual-stage filtration system designed exclusively for Coway Airmega 300 and 300S units. It combines a Green True HEPA filter with activated carbon to capture ultra-fine particles and remove odors effectively. Ideal for allergy sufferers and those needing robust odor control in large spaces up to 1256 sq ft.

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 | |
1,256 sq_ftbest | 674 sq_ft | |
— | 410 cfmbest | |
99.97 percentbest | 99.97 percentbest | |
| ↓ lower better | 0.03 micronsbest | 0.1 microns |
2 | 4best | |
| ↓ lower better | 1.5 lbsbest | 2.15 lbs |
2best | 1 |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility & Fit(1) | ||
Compatible Models | Coway Airmega 300/300S | Blue Pure 211i Max |
Maintenance & Lifespan(1) | ||
Replacement Interval (months) | 12 months | 7.5 months |
Physical & Packaging(3) | ||
Weight (lbs) | 1.5 lbs | 2.15 lbs |
Dimensions | 1.5 x 12.0 x 10.13 | 10.0 x 4.7 x 20.7 |
Package Quantity | 2 | 1 |
Filtration Performance(5) | ||
Filtration Standard | True HEPA | HEPASilent |
Coverage Area (sq_ft) | 1256 sq_ft | 674 sq_ft |
Minimum Particle Size Captured (microns) | 0.03 microns | 0.1 microns |
Filter Stages | 2 | 4 |
Pre-Filter Type | Washable | |


Professional reviewers like HouseFresh praise the Max2 filters as a signature three-stage HyperCaptive system, noting the Green True HEPA captures an impressive percentage of ultra-fine particles down to 0.01 μm.
Everyday users on Target give high ratings for the filters, praising their easy installation, effective smoke and dust capture, and reliable one-year lifespan before the replacement light comes on.




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.