Have you ever wondered what MERV stands for? MERV stands for Minimum Efficiency Reporting Value. It was developed by ASHRAE as a way to compare different filters. The standard has changed since it’s inception, and it’s important to stay up to date on what is changing. The guide below shows the new efficiency

chart and how it corresponds to the MERV rating. All new filters will be tested and fall into the categories outlined in the 2015 standard. Will this affect your air filter selection? Maybe…