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30 December, 11:57

What's a disadvantage of highest MERV-rated filters?

1) the pressure drop across high MERV filters is less.

2) high MERV filters require at least a 240 V power supply.

3) the pressure drop across high MERV filters is significant.

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Answers (2)
  1. 30 December, 12:00
    0
    3) The pressure drop across high MERV filters is significant.

    Explanation:

    The higher the MERV filter rate is, the most efficient it will be when it comes to trapping small particles. This comes with a cost. Since the space between fibers is smaller, this translates into a higher pressure drop. This is a disadvantge since in air conditioning or ventilation systems, the higher the pressure drop, the biggest the equipment and the most expensive it is.
  2. 30 December, 12:06
    0
    3) the pressure drop across high MERV filters is significant.

    Explanation:

    MERV (Minimum-Efficiency Reporting Value) is used to measure the efficiency of filter to remove particles. A filter of high MERV can filter smaller particles but this causes an increase in reduced air flow that is an increase in pressure drop. High MERV filters capture more particles causing them to get congested faster and thereby increasing pressure drop.

    Excessive pressure drop can cause overheating and lead to damage of the filter. The pressure drop can be reduced by increasing the surface area of the filter.
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Home » Engineering » What's a disadvantage of highest MERV-rated filters? 1) the pressure drop across high MERV filters is less. 2) high MERV filters require at least a 240 V power supply. 3) the pressure drop across high MERV filters is significant.
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