What is a MERV rating
MERV Rating |
Average Particle Size Efficiency in Microns |
|---|---|
1-4 |
3.0 - 10.0 less than 20% |
| 5 | 3.0-10.0 greater than or equal to 20% |
6 |
3.0-10.0 greater than or equal to 35% |
| 7 | 3.0-10.0 greater than or equal to 50% |
8 |
1.0-3.0 greater than or equal to 20% |
| 9 | 1.0-3.0 greater than or equal to 35% 3.0-10.0 greater than or equal to 75% |
10 |
1.0-3.0 greater than or equal to 50% |
| 11 | 0.30-1.0 greater than or equal to 20% 1.0-3.0 greater than or equal to 65% 3.0-10.0 greater than or equal to 85% |
12 |
0.30-1.0 greater than or equal to 35% |
| 13 | 0.30-1.0 greater than or equal to 50% 1.0-3.0 greater than or equal to 85% 3.0-10.0 greater than or equal to 90% |
14 |
0.30-1.0 greater than or equal to 75% |
| 15 | 0.30-1.0 greater than or equal to 85% 1.0-3.0 greater than or equal to 90% 3.0-10.0 greater than or equal to 95% |
16 |
0.30-1.0 greater than or equal to 95% |
| High efficiency Particulate Air filter HEPA* | 99.97% of particles in the 0.3-micron range Particles that are larger or smaller than 0.3 microns are captured with a greater than 99.97% efficiency |
