Furnace Filter Ratings Merv Vs Mpr

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.

Furnace filter ratings merv vs mpr.

What is the difference between merv mpr and fpr air filter ratings. Learn the differences between merv mpr fpr to choose the best filter for your needs. Exclusive filtrete brand filter technology focuses on capturing the tiniest particles between 0 3 and 1 micron µm in size. Mpr micro particle performance rating.

It s why we created a different measurement microparticle performance rating mpr. Scientists at 3m believe that merv only tells part of the story. However a merv 13 filter removes those as well as dust mites mold pet dander smoke smog viruses bacteria and more. When it comes to the average home anything rated merv 7 to 12 is sufficient to filter airborne contaminants.

Typical merv ratings for furnace filters are 4 8 11 or 13 with various pollutants removed at each level of filtration. Their basic filter is rated at 100 and their most efficient filter is rated at 2800. This rating includes microscopic particles not visible to the naked eye. 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.

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. For example a merv 4 filter removes dust lint and pollen. The mpr scale however uses much larger numbers. Microparticles are not even measured on the merv scale until it reaches merv 11.