Do you know that how are panel filters rated?


Panel filters are given a rating based on the size of the particles they are able to eliminate from the surrounding air.

Panel filters are usually rated through the minimum efficiency reporting value (MERV system).

The MERV rating system has a scale running from 1-16, where the lower values grade filters that remove large sized particles and higher grades for those that restrain small size particles.

  • MERV 1-4: These are mostly primary panel filters and will remove particles above 10 microns in diameter. You will use them in residential window AC units.
  • MERV 5-8: The majority are secondary panel filters and remove particles that range from 3-10 microns. You can use them in industrial workplaces, commercial and residential buildings
  • MERV 9-12: The panel filters remove particles between 1 and 3 microns. They are suitable for hospitals, laboratories, businesses, and superior residential buildings.

According to the EN 779 system, primary panel filters range from G1 to G4, while secondary panel filters range from M5 to F9.

Post time: Jul-29-2022