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1 kwi 2020 · This American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as
MERV RATING CHART. Standard 52.5 Minimum Efficiency Reporting Value. Dust Spot Efficiency. Arrestance. Typical Controlled Contaminant. Typical Applications and Limitations. Typical Air Filter/Cleaner Type. 20.
MERV values in the 52.2 test reporting. Note: This table is intended to be a general guide to filter use and does not address specific applications or individual filter performance in a given application.
We’ll look at MERV 1-20 ratings in the MERV rating chart (you’ll find the chart further on). We’ll also look into how high a MERV rating an air purifier should have to best filter out different air contaminants (pollen, mold spored, smoke, dust, etc.).
This American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as
Efficiency Reporting Value (MERV) to determine the performance of each filter tested. MERV is a central feature of ASHRAE Standard 52.2. One important characteristic of ASHRAE Standard 52.2 is the required calculation of dust holding capacity and arrestance, explained in Addendum B. A key element of 52.2 is particle size efficiency,
MERV rating will be in the left hand column of the first row, where that PSE for each group generates a true statement. For example, if the PSE for Range 3 is 81%, and the PSE for Range 2 is 42%, the filter would be MERV 9 (Range 1 efficiency is not taken into consideration for MERV 9).
