What's Merv 11?
Every day, we get lots of queries from homeowners about MERV ratings and the functionality of MERV 11. In this article, we will provide you with in-depth information about MERV filter rating and what does MERV mean.
MERV stands for Minimum Efficiency Rating Value and it is the industry standard rating system to indicate how effectively an air filter can work against the pollutants present in your home’s air. Starting from 1 to 16, MERV rating tells how well an air filter is against the pollutants and dust of a specific size.
MERV 11 filters are the high-end air filters on the chart. More specifically, MERV 11 air filters are capable of removing 65% to 79% of 1.0 to 3.0 microns and more than 85% percent of 3.0 to 10.0 microns.
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We often get queries from homeowners about can they use MERV 14 to 16 filters at their home? Well, the answer is NO. MERV 14 to 16 air filters are reserved for commercial uses like hotels, labs, and hospitals where the cleanest air is a must.
Moreover, using higher grade filers at your home will not just reduce the air quality but also reduce the efficiency of your furnace system. Higher MERV rating filters have extremely small pores through which air can pass. These filters will add more load/pressure to the furnace system and result in a totally inefficient filter.
Also, we can’t deny the fact that MERV 8 air filters are still OK to use for the removal of 3.0 microns. In fact, air filters ranging from MERV 7 to 12 are ideal airborne contaminant filters for most of the residential applications. But MERV 11 air filters are the most recommended because of their abilities to clean BETTER than the others on the list.
We always suggest homeowners to change their air filters frequently or as recommend by the air filter manufacturer. Keep using the same filter for more than recommended time will reduce its efficiency to trap the air pollutants and make the filter incapable of doing the task it was designed for. An average lifespan of an air filter is a few months. But if you are living in an area which is more prone to dust and air pollution or if you are living with your pets, consider changing the air filters of your house even more frequently.