What does MERV Rating Stand For ?

MERV 13 filters are the highest efficiency
filters you can buy for this type of filter

The filtering materials used in a furnace filter make a difference in efficiency. When we refer to efficiency, we mean how good a furnace filter is at removing particles from the air flow. The more efficient, the smaller the particles the filter will trap. A higher efficiency filter means cleaner air in your home, and fewer repairs of your air conditioning system.

A national organization, ASHRAE, developed the standard for testing filters. With this test, the results are express in MERV (minimum efficiency reporting value). Simply stated, the higher the MERV number, the more efficient the filter will be in removing contaminants and pollutants from the airflow.

Years ago the highest efficiency filter was a MERV 6, but as people became concerned with air quality, better filtering material were developed.

Our company offers a MERV 13, the highest efficiency furnace filter you can get for these types of systems. A MERV 13 filter is more than twice as efficient as a MERV 8 in removing contaminants 1 micron in size. To understand how small 1 micron is, a human hair measures 100 microns.

Finally, keep in mind that the MERV rating has nothing to do with size. MERV 8 and MERV 11 and MERV 13 are all the same size filters for any given model number.