
Coway AIRMEGA Max 2 Filter
Score: 92/100
Blueair Protect 7400 Filter
Score: 88/100Rankings

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 Protect 7400 SmartFilter is a high-tech replacement filter featuring HEPASilent Ultra™ technology and smart RFID tracking for optimized maintenance. It offers superior efficiency and lower energy consumption than traditional HEPA filters but lacks independent third-party verification. It is ideal for tech-savvy users of the Protect 7470i/7410i seeking advanced air quality monitoring.
| Attribute | ![]() | ![]() |
|---|---|---|
12 monthsbest | 12 monthsbest | |
1,256 sq_ftbest | — | |
99.97 percentbest | 99.97 percentbest | |
| ↓ lower better | 0.03 micronsbest | 0.1 microns |
2best | — | |
| ↓ lower better | 1.5 lbsbest | 2.07 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 | Protect 7470i, 7410i |
Physical & Packaging(3) | ||
Weight (lbs) | 1.5 lbs | 2.07 lbs |
Dimensions | 1.5 x 12.0 x 10.13 | 9.4 x 3.4 x 13.2 |
Package Quantity | 2 | 1 |
Filtration Performance(3) | ||
Filtration Standard | True HEPA | HEPASilent Ultra |
Minimum Particle Size Captured (microns) | 0.03 microns | 0.1 microns |
Pre-Filter Type | Washable | Paper |

Products in the top-left offer the best value (high score, low price).

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 do not provide specific quotes or aggregated feedback in the available search results. Manufacturer sources highlight the filter as their most advanced technology, emphasizing superior particle and gas removal performance, extended lifespan up to one year, and data-based smart tracking capabilities.
Search results contain no consumer reviews, ratings, or testimonials. Common praise and complaints cannot be detailed due to the absence of user feedback in the provided data.