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These filters offer minimal filtration, capturing less than 20% of large particles (typically larger than 10 microns). They are primarily used to protect HVAC systems from large debris but do not significantly improve indoor air quality.

Filters in this category are about 70-85% efficient at capturing larger particles (3-10 microns) like dust mites, mold spores, and pollen. They provide basic filtration suitable for residential and commercial use where moderate air quality improvement is needed.

These filters offer enhanced filtration with an efficiency of 75-90% for particles in the 3-10 micron range. They capture smaller particles more effectively than MERV 8, providing better protection for HVAC systems and improved indoor air quality.

MERV 10 filters provide around 85-90% efficiency at capturing particles between 3 and 10 microns. They offer improved filtration over MERV 8 filters and are ideal for homes or businesses requiring greater air cleanliness.

These filters capture up to 95% of particles between 1-3 microns, such as dust, mold spores, and pet dander. MERV 11 filters are suitable for environments where higher air quality standards are needed, including homes with pets or individuals with allergies.

Filters rated MERV 13 capture over 90% of particles as small as 1 micron, including bacteria, smoke particles, and finer dust. These filters are often used in hospitals, commercial buildings, and homes where maximum air quality is a priority.