What are MERV Filter Ratings?

MERV here stands for Minimum Efficiency Reporting Value, a value that lets us know the size of particles an air filter is designed to catch. Higher MERV ratings are more effective at capturing smaller particles. That’s why hospitals tend to use MERV 16 or higher, to capture the most pollutants possible.

Although lower MERV rated filters are less efficient overall, they allow more air to advance through the filter, which can be helpful to the operation of the HVAC system. It’s important to have the appropriate mix of air filter and MERV rating for your exact needs and your system. Call Bryant Heating & Cooling Service Experts in Windsor today to let our experts walk you through which MERV rating is needed for your home and family.

The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), which developed the MERV rating, suggests filters with minimum MERV ratings of 6. The U.S. Department of Energy proposes a minimum of MERV 13. For the best overall solution for most homeowners, acquire an Air Purification System, which comes with a MERV 16 media filter, and you’ll be in good shape for years.

Here is a snapshot of the MERV Ratings:

• MERV 1 to 4— <20% of large particles (3 to 10 microns) are captured
• 5 to 7—Between 20% and 69% of large particles are captured
• 8 to 10—Approximately 85% of large particles and 50% of small particles (1.0 to 3.0 microns) are captured
• 11 to 16—More than 90% of large particles and between 70% and 90% of small particles are captured
• 17 to 20—Even the smallest particles (< 0.3 microns) are captured

The right MERV rating on the right filter could strongly influence impact your indoor air quality, your health and your lifestyle. So choosing the right air filter matters. Call Bryant Heating & Cooling Service Experts today at 226-773-3357. We carry a full range of air filtration choices, knowledge and expert service—and we’re here 24 hours a day for Windsor.