Furnace Filter Ratings Merv Vs Fpr

Many whole house filters list a minimum efficiency reporting value merv developed by ashrae formerly the american society of heating refrigerating and air conditioning engineers.

Furnace filter ratings merv vs fpr. Beyond all the other factors involved in choosing the best furnace filter focus most of your attention on the ratings. In simple terms manufacturers of furnace filters perform testing to assess how well the filters block out or trap air. Fpr or filter performance rating is a rating system developed by the home depot for brands sold through their stores including honeywell. Home depot shared a basic comparative chart but no test data or protocols.

How to choose a filter by its merv. Fpr or filter performance rating labels filters based on a number scale from 4 through 10 in addition to a color coding system. Mpr rating scales filter rating scales indicate not only the quality or the air filtration but also the specific types of particles removed. Merv minimum efficiency reporting value.

It equates fpr 9 and 10 to merv 12 fpr 7 and 8 to merv 11 and fpr 6 to merv 10. This highly rated filter has the highest fpr possible and comes in a wide range of sizes fitting most all furnaces. See screenshot below this filter for sale on the home depot shows fpr 10 as equivalent to either merv 8 or merv 13. This furnace filter has an fpr rating of 10 or a merv of 13 meaning it can capture particles as small as 3 microns and it even has an electrostatic charge that helps attract microscopic particles.

Fpr here i will help you understand these three abbreviations. Some filters on their website that have both an fpr and a merv rating and at least one with an fpr of 10 is shown as equivalent to either merv 8 or merv 13. Difference between ratings for furnace filters merv vs. All filters sold must meet basic safety expectations and most brands have higher level filters to address particular needs and situations.

Designed by the home depot for brands sold through their stores including honeywell this rating structure is very similar to merv rating. Every furnace filter in the us carries a merv rating which is the only. It utilizes a color code and number scale 4 to 10 that closely resembles the merv rating. Below we ll break down where the rating systems come from and how to use them when shopping for your next filter.

For this there are three primary codes.