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Filter Ratings

MERV Ratings Explained

MERV (Minimum Efficiency Reporting Value) rates how well a filter captures airborne particles on a 1–16 scale set by ASHRAE Standard 52.2. Higher numbers catch smaller particles.

MERV 4–8
Dust, pollen and lint

Polyester media

MERV 10–11
Adds finer dust and mold spores

Pleated, mini pleat

MERV 13–15
Fine particles, including smoke and many bacteria

Pleated, mini pleat

HEPA
Nearly all airborne particles

HEPA box filters

Your equipment has to be able to move air through the filter, so we match the rating to each unit. Not sure? Call (806) 507-4996.

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