What is the typical efficiency rating for a MERV 8 filter?

The typical efficiency rating for a MERV 8 filter falls within the range of 70-85%. MERV, or Minimum Efficiency Reporting Value, is a scale that rates the effectiveness of air filters in capturing airborne particles. Filters rated at MERV 8 are designed to capture a range of particulates including dust, pollen, and mold spores, which makes them suitable for residential and light commercial applications.

Filters in this range provide a balance of filtration efficiency and airflow resistance, making them useful in maintaining indoor air quality without significantly impeding airflow in HVAC systems. The efficient attenuation of particles is critical for ensuring a healthier indoor environment while also being mindful of energy consumption associated with air movement through the filtration system.