What is a MERV rating?

MERV stands for Minimum Efficiency Rating Value, an industry standard rating system telling you how efficient a filter is at removing particulates from your indoor air. A MERV rating is a numerical value ranging from 1 (lowest efficiency) to 16 (highest efficiency/best). GeneralAire® air cleaners carry a MERV rating from 8 to 13, not including the HEPA AC500, which removes 99.97% of all particulates from the air

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