About Merv Ratings

There is often much confusion around filter efficiency ratings and what they mean. The standard industry rating system for filter efficiency is Merv, or Minimum Efficiency Reporting Value. When filter manufactures use other in house rating systems, they are often just trying to prevent you from being able to compare their expensive filters to much cheaper no name ones! Think Home Depot. Learning about this system and how it works can be very beneficial in helping you select the correct filters for your application and will almost always save you time and money.