Furnace Filter Pressure Drop Comparison

Chart of filter pressure drop for filters with merv ratings from 2 to 13.

Furnace filter pressure drop comparison.

All the others pleated start from around 0 20 on up at 300 fpm. And speaking of filter pressure drop here s their chart for filters with merv ratings from 2 to 13. It is often very difficult to compare pressure drop for hvac air filters. Merv fpr and mrp.

The pressure drop was the same. 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. But most people seem to have had no. Check how thick the filter is with most roughly 1 inch thick.

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. This one begins a series testing various furnace filters for their pressure drop when used in a real furnace. 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. So a filter that measure 20 inches long by 25 inches wide would be replaced by a 20 x 25 filter.

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. How to replace a furnace filter. In simple terms manufacturers of furnace filters perform testing to assess how well the filters block out or trap air. For this there are three primary codes.

I tried it a couple times. 2009 they tested all the filters at the same width and height 16 x 25 but the depth varied. 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. Beyond all the other factors involved in choosing the best furnace filter focus most of your attention on the ratings.

Furnace filters are replaced by measuring the width by the length. David springer home energy magazine article nov.