Browse More News

What is a Filter Merv Rating

What is an efficiency or MERV rating?

Most filters are labeled with a MERV (Minimum Efficiency Reporting Value) rating number, which measures a filter’s ability to trap particles ranging in size from 3.0 microns to 10.0 microns. This number is derived from a test method designed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) and is intended to help people compare filters.

Residential filters commonly have MERV ratings of 1-16. The higher the MERV rating, the more efficient the filter is, and the more particles it can filter.

  • A MERV rating of 6 means the filter is 35% to 50% minimum efficient at capturing particles, sized 3.0-10.0 microns.

  • A MERV rating of 8 means the filter is 70% to 85% minimum efficient at capturing particles, sized 3.0-10.0 microns.

  • A MERV rating of 11 means the filter is 85% to 95% minimum efficient at capturing particles, sized 3.0-10.0 microns.

  • A MERV rating of 16 means the filter is 95% minimum efficient at capturing particles, sized 3.0-10.0 microns.

MERV is an industry standard rating, so it can be used to compare filters made by different companies.

Tags: , ,

Written by

Comments are closed.