What is a MERV rating?

By Forinfos - 03/01/2026 - 0 comments

A MERV rating describes the efficiency of air filters used in residential air conditioner and heating units. MERV is an acronym for minimum efficiency reporting value.

The higher value of a MERV rating does not necessarily represent a better quality air filter. A high MERV rating indicates that small pores are present that can restrict air flow. If the air flow is restricted, the quality of the air in the residence can be compromised, and the air conditioner unit can potentially be damaged.

Filters that have a high MERV rating need to be replaced often to avoid restricted air flow.

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