MERV ratings are:
The ability of an air filters to remove dust from the air.
MERV is a standard used to measure a filter.
Higher MERV ratings means fewer dust particles and contaminants in the air.
MERV ratings range from 1 - 16 and measurements are in microns.
Common particles related to MERV ratings are pet dander, insecticide dust, smog, dust, viruses, wood, tobacco smoke, spores, bacteria and pollen.
Filters with a merv rating of 9 to 12 are used in commercial and industrial applications and will stop particles in the 1 to 3 micron range. These filters are a great choice for home owners who want the best dust control possible.
When using filters with Merv 9 ratings and above it is important to clean or replace them !
