What does a MERV rating indicate?

A MERV rating, or Minimum Efficiency Reporting Value, specifically reflects the effectiveness of air filters in capturing a range of airborne particles. This rating system ranges from 1 to 16, with higher numbers indicating a greater ability to trap smaller particles, including dust, pollen, pet dander, smoke, and even some bacteria and viruses. The MERV rating allows consumers and professionals to choose filters suited to specific air quality needs, ensuring that the HVAC system can operate effectively while maintaining indoor air quality.

In summary, the MERV rating provides critical information regarding how well air filters can perform their primary function—removing contaminants from the air—making it essential for those looking to improve air quality in various settings, such as homes, offices, and other environments.