When it comes to air filtration, MERV 12 filters are often recommended as the highest rating for residential environments. These filters are designed to remove up to 89% of particles from 1.0 to 3.0 microns in size, making them an effective option for improving air quality in the home. However, it's important to understand that the MERV ratings are only one factor to consider when selecting an air filter. In addition to the MERV rating, the thickness of the filter is also important.
A MERV 12 filter that is only 1 inch thick is likely to be more restrictive than a 4 inch thick MERV 12 filter. This means that 81.5% of the dust particles introduced into the MERV filter were successfully filtered from the air. Pleated filters with MERV 8 to 13 are more effective than fiberglass filters at trapping small particles and reducing pressure drop. These filters can effectively filter out contaminants such as pollen, dust mites, sawdust, mold spores, and lint from the air.
For those looking for even better air quality, MERV 13-16 filters are recommended. These filters are slightly more restrictive than MERV 1-4 filters and have the ability to trap mold spores and part of pet dander, along with dust and pollen. MERV values greater than 13 are generally used in hospitals, manufacturing plants, and other environments that have high air quality requirements. However, for most residential applications, a MERV 12 filter should provide adequate filtration and improved air quality. When it comes to selecting an air filter for your home, it's important to consider both the MERV rating and the thickness of the filter. A MERV 12 filter with a thickness of 4 inches or more will provide better filtration than a thinner filter with a lower MERV rating.
Additionally, pleated filters with a MERV rating of 8-13 are more effective at trapping small particles than fiberglass filters. For those looking for even better air quality, MERV 13-16 filters are recommended. These filters can trap mold spores and pet dander in addition to dust and pollen. However, for most residential applications, a MERV 12 filter should provide adequate filtration and improved air quality.
