Transcription of HVAC Filter Selection and MERV Ratings: What …
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HVAC Filter Selection and MERV Ratings: What …
HHVVAACC FFiilltteerr SSeelleeccttiioonn aanndd MMEERRVV RRaattiinnggss:: WWhhaatt DDooeess IItt AAllll MMeeaann?? 659 Van Meter Street Cincinnati OH 45202-1568 T: 513 241 1230 F: 513 241 1287 Email: Website: 1By David Klenk, Mechanical Engineer In 1968, American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) created Standard to test air filters using established techniques employed by the National Bureau of Standards and the Air Filter Institute. During the course of the past 40 years, this standard has been modified several times to reflect changing air filtration testing requirements. The version in use today, Standard , evaluates filters based upon three key measurements: Arrestance. Designated as a percentage, the arrestance of the Filter , or ability of a Filter to remove synthetic dust, is calculated based upon the known weight of dust fed into a test unit under controlled conditions and the amount of weight added or captured by the Filter .
HVAC Filter Selection and MERV Ratings: What Does It All Mean? 659 Van Meter Street Cincinnati OH 45202-1568 T: 513 241 1230 F: 513 241 1287 Email: aei@hixson-inc.com Website: www.hixson-inc.com
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