What does The MERV Rating of a Filter Mean

The Merv rating is an important means of measuring the quality of furnace filters. It stands for the Minimum Efficiency Reporting Value, and it is used to show how effective an air filter is at capturing specific particles from the air. When considering the best filter for any given application, it is important for consumers to understand what a Merv rating is and how it is achieved.

The Merv rating is a system developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE). The system is intended to create an industry-wide standard for measuring and quantifying the efficiency of an air filter. Filters are rated on a scale of 1-16, where the higher numbers indicate more efficient filtration. Filters are tested in what is known as an “arrestance” test, which measures the amount of dust and other particles that the filter will capture from a specific amount of air passing through it.

Regulation of the Merv rating system is handled by local and national agencies. For example, the United States Environmental Protection Agency (EPA) regulates filter manufacturers, determining what Merv ratings filter manufacturers must achieve. The Consumer Product Safety Commission (CPSC) also has standards for air filter manufacturers, ensuring that all air filters are safe for consumer use.

From a consumer perspective, the Merv rating of an air filter is an important measure of how effective the filter will be at removing particles from the air. Higher Merv rated filters are more efficient at capturing a wide range of particles from the air, including dust and pollen. While these more effective filters may cost more, they can be worth the investment for those looking for improved air quality.

Understanding the Merv rating system is essential for any consumer or professional looking for the best air filter for their particular application. The Merv rating system is designed to create a standard for measuring air filter efficiency, and is regulated by a variety of both local and national agencies. Knowing the Merv rating of the filter can help to ensure that the most effective filtration is achieved, while also helping to keep costs in check.  At FurnaceFilters.US, we know our Merv ratings, we know how to guide you in recommending the best rating for your needs, We are happy to answer any questions you might have about Merv ratings and how you can get the value for your filter investment.  Order from us with confidence you will not be disappointed.