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.

Exclusive filtrete brand filter technology focuses on capturing the tiniest particles between 0 3 and 1 micron µm in size. This rating includes microscopic particles not visible to the naked eye. Microparticles are not even measured on the merv scale until it reaches merv 11. Fpr rating systems air filter ratings explained.

For example a merv 4 filter removes dust lint and pollen. What is the difference between merv mpr and fpr air filter ratings. It s why we created a different measurement microparticle performance rating mpr. When it comes to the average home anything rated merv 7 to 12 is sufficient to filter airborne contaminants.

The three rating systems were created by separate organizations. Their basic filter is rated at 100 and their most efficient filter is rated at 2800. The mpr scale however uses much larger numbers. 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.

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. Mpr micro particle performance rating. Typical merv ratings for furnace filters are 4 8 11 or 13 with various pollutants removed at each level of filtration. Scientists at 3m believe that merv only tells part of the story.