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Why High-Performance Furnace Filters May Ruin the BlowerRatings for filters range from 1 to 20 on the MERV (minimum efficiency reporting value ... the blower action by a factor of four. The chart displays the static pressure drop curves for filters ...
The most commonly used system applies a MERV number (minimum efficiency reporting value) to each filter, which was developed by ASHRAE (formerly the American Society of Heating, Refrigerating and ...
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