Hepa Filter Rating Chart

The higher the merv rating the more efficient it is at pulling articles from the air. If each air filtration system can move 100 cfm cubic feet per minute through the air purifier filters then the hepa type unit will have a cadr of 90 and the true hepa system will have a cadr of 99 97. This type of air filter can theoretically remove at least 99 97 of dust pollen mold bacteria and any airborne particles with a size of 0 3 microns µm.

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Merv Filter Rating Charts Filter Application Chart

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Merv Filter Rating Charts Filter Application Chart

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Merv Filter Rating Charts Filter Application Chart

Merv Rating What Merv Rating Means In Air Filtration

A true hepa filter is a 17 the hepa standard.

Hepa filter rating chart. You ll see that hepa air filters are usually rated from 15 20 on the merv scale. The air filter rating ranges from 1 20 in the standard merv chart. So if you need to remove mold spores have pet dander allergies dust mites pollen or fine dust a hepa air filter is the best choice. When looking for hepa air filters it will show a merv rating.

Merv means minimum efficiency reporting value. Below is a chart from john semmelhack showing the percentage of particles removed by size range of particle and the merv rating of the filter. What is a hepa filter. Say a hepa type filter can remove 90 of airborne particles while a true hepa filter is at 99 97.

Hepa is a type of pleated mechanical air filter. A hepa filtration system is good for all allergens. Here is a handy guide from wikipedia. Hepa is a type of pleated mechanical air filter.

For a filter to get the merv 13 rating for example it must filter out a minimum of 90 of the pm10 a minimum of 85 of the pm2 5 and a minimum of 50 of the pm1 0. So it seems the hepa air purifier is better. The merv rating scale. It is an acronym for high efficiency particulate air filter as officially defined by the u s.

It is the standard that all air filters are rated through their process and effectiveness. This type of air filter can theoretically remove at least 99 97 of dust pollen mold bacteria and any airborne particles with a size of 0 3 microns µm. It is an acronym for high efficiency particulate air filter as officially defined by the u s. This is the most common rating for home hepa air purifiers.