We have talked about the importance of air quality a handful of times now. It is so important! The proper filter type can improve your indoor air quality tremendously. That is where MERV rating comes in. MERV stands for Minimum Efficiency Report Value. The rating can range from one to sixteen. Some ratings even go to twenty but those are more rare and not normally used in households. The higher the number, the better it is.

To break it down even more, MERV measures the smallest particle that the filter can block. Before further explanation, a strand of human hair is about fifty microns in diameter.

MERV ratings one to six are on the lower end but do block contaminants that are ten microns and bigger. MERV ratings seven to thirteen can remove contaminants from mold spores, mildew spores, and even smoke particles. There are a few harmful bacteria types that it can block as well. Because of everything that can be blocked from filters rated like this, this is the minimum rating recommended.

We do have a limited supply of filters at the office. If you are unable to find your filter at the store or online, we would be happy to help you. We also have options for washable and electrostatic filters as well. These types of filter are able to be cleaned and used over and over instead of having to throw them away. They are more environmentally friendly!