Saturday, April 3, 2010

Minimum Efficiency Reporting

MERV stands for Minimum Efficiency Reporting Value. This standard is now in international industry has set up by the committee that oversees the furnace filter industry. This standard is also used for determining a furnace filter's ability to capture and hold dirt and dust in specific size ranges for Humidifier Filters. Some furnace filters manufacturers such as 3M use their own rating system. The HVAC industry uses ASHRAE 52.2 testing, which assigns a Minimum Efficiency Reporting Value. A larger MERV number means better filtration in Aprilaire Humidifier.


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