Furnace Filter Ratings Merv

The higher the merv rating on a filter the fewer dust particles and other contaminants can pass through it.

Furnace filter ratings merv.

One of the best furnace filters for cigarette smoke is the nordic pure pleated ac furnace air filter which boasts a high merv rating and rave reviews. Merv 5 to 7. While merv ratings reflect a filter s ability to trap both microscopic and macroscopic particles mpr ratings only grade a filter on its capacity to remove particles from 0 3 to 1 microns. This rating system reports how well the filter captures and holds.

Merv air filter ratings range from 1 least efficient captureability to 16 very efficient. For reference a typical dust particle is between 2 and 8 microns while pollen starts at 7 microns and can get up to 70 microns in size. This is an industry standard rating system. A low merv rating means that the filter does not remove as many particulates from the air.

In general filters with a rating of merv 16 or below are considered to be hvac system grade filters for residential commercial and general hospital use. Conversely a high merv rating indicates that the filter does a good job of removing particulates from the air. Merv stands for minimum efficiency reporting value. The rating indicates the size of particles the air filter is designed to capture.

There are a wide variety of sizes to choose from with this filter which has a merv rating of 13 the highest tier on the scale. An air filter s merv rating is a scale from 1 16 that describes the minimum efficiency of the air filter. A merv rating chart shows a numerical value. Minimum efficiency reporting values or mervs report a filter s ability to capture larger particles between 0 3 and 10 microns µm.

The american society of heating refrigerating and air. Owen said filters in this range like this merv 7 nordic pure were created as an improvement on the basic merv 1 to 4 filters and designed to also filter out midsize particles 3. Merv 17 through merv 20 filters are typically used in surgical operating rooms clean rooms and other contexts that require absolute cleanliness. Use this rating system compare filters made by different manufacturers.

The range is from 1 lowest efficiency to 20 highest efficiency. This value is helpful in comparing the performance of different filters the rating is derived from a test m. Merv ratings range from 1 16.