When it comes to air filtration, the MERV rating is an important factor to consider. MERV stands for Minimum Efficiency Reporting Value and is used to measure the effectiveness of air filters in trapping particles. The higher the MERV rating, the more effective the filter is at trapping particles. MERV ratings range from 1 to 16, with higher ratings indicating a more effective filter.
A MERV 5 filter can capture up to 34% of particles, while a MERV 6 stops 35-49%, a MERV 7 avoids up to 69%, and a MERV 8 traps up to 85%. These filters are slightly more restrictive than the MERV 1-4 filters and have the ability to trap mold spores, pet dander, dust, and pollen. High-efficiency particulate air (HEPA) filters trap even smaller particles than those of the MERV 16 rating and are generally used in surgical operating rooms, clean rooms, and other contexts that require absolute cleaning. Although ASHRAE recommends MERV models 13 and 14, it's best to select a filter with the highest possible MERV rating for your specific air conditioning system. All air filters require regular cleaning and filter replacement to work properly.
Follow the manufacturer's recommendations for maintenance and replacement. When it comes to selecting an air filter for your home or business, it's important to understand the different MERV ratings and their capabilities. The higher the MERV rating, the more effective the filter will be at trapping dust, pollen, mold spores, pet dander, and other airborne particles. HEPA filters are even more effective than those with a MERV 16 rating and should be used in contexts that require absolute cleaning. Be sure to follow the manufacturer's recommendations for maintenance and replacement of your air filter.
