Furnace Filter Ratings Merv Vs Mpr

Microparticles are not even measured on the merv scale until it reaches merv 11.

Furnace filter ratings merv vs mpr.

Learn the differences between merv mpr fpr to choose the best filter for your needs. This rating includes microscopic particles not visible to the naked eye. Mpr micro particle performance rating. While merv ratings reflect a filter s ability to trap both microscopic and macroscopic particles mpr ratings only grade a filter on its capacity to remove particles from 0 3 to 1 microns.

The three rating systems were created by separate organizations. Scientists at 3m believe that merv only tells part of the story. For example a merv 4 filter removes dust lint and pollen. Fpr rating systems air filter ratings explained.

For reference a typical dust particle is between 2 and 8 microns while pollen starts at 7 microns and can get up to 70 microns in size. When it comes to the average home anything rated merv 7 to 12 is sufficient to filter airborne contaminants. What is the difference between merv mpr and fpr air filter ratings. Exclusive filtrete brand filter technology focuses on capturing the tiniest particles between 0 3 and 1 micron µm in size.

This rating system was developed by the company 3m designed to rate the manufacturer s filters and their ability to capture airborne particles smaller than 1 micron. It s why we created a different measurement microparticle performance rating mpr. The mpr 2800 would qualify as a merv 14 so even though 3m emphasizes the smallest size range of particles their best filter doesn t qualify for the highest merv rating. The mpr scale however uses much larger numbers.