Blog Articles Tagged "mpr"

It’s true that different types of filters all attempt to do the same thing, but different filters work with different degrees of effectiveness. The Minimum Efficiency Reporting Value (MERV) only requires a filter to capture medium to large particles, which only makes up about 1% of the contaminants. But a Microparticle Performance Rating (MPR) on a filter is better, because it measures a filter’s ability to capture particles between .03 and 1.0 micron, which means it captures 99% of contaminants in the air.