Furnace Filter Pressure Drop Comparison

The pressure drop was the same. Nordic pure reports the filter s pressure drop as 0 24 inch which puts it a shade higher than the similar merv 12 equivalent filtrete 1500 at 0 22 inch. I tried it a couple times.

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On my next filter change i m going to repeat the experiment with merv 8 and 11 and see if there s a difference but my initial impression is that mpr is bs.

Furnace filter pressure drop comparison.

How to replace a furnace filter. The fiberglass filters have a 0 10 to a 0 13 drop going from 300 fpm to 500 fpm across the filter. This one begins a series testing various furnace filters for their pressure drop when used in a real furnace. For this there are three primary codes.

In simple terms manufacturers of furnace filters perform testing to assess how well the filters block out or trap air. All the others pleated start from around 0 20 on up at 300 fpm. So a filter that measure 20 inches long by 25 inches wide would be replaced by a 20 x 25 filter. Beyond all the other factors involved in choosing the best furnace filter focus most of your attention on the ratings.

We test 20 filters for pressure drop and efficiency. Furnace filters are replaced by measuring the width by the length. Buy a replacement that matches your filter size. Check how thick the filter is with most roughly 1 inch thick.

Tested the pressure drop across it pulled it out and replaced it with an mpr 1100 or whatever they say mercy 8 is equivalent to. Even though filter tests are standardized it is not unusual for the same type of filter to be tested in two different laboratories with two different results. But most people seem to have had no. David springer home energy magazine article nov.

Merv fpr and mrp. 2009 they tested all the filters at the same width and height 16 x 25 but the depth varied. And speaking of filter pressure drop here s their chart for filters with merv ratings from 2 to 13. Funny just ran across this test below comparison of different filters and it doesn t look good for any but the 1 simple fiberglass filters.

It is often very difficult to compare pressure drop for hvac air filters. Chart of filter pressure drop for filters with merv ratings from 2 to 13.