All three ratings have their problems but even Home Depot and 3M admit on their websites that MERV is the industry standard for rating filters. In my opinion, if microparticles are a big concern for you because of allergies, pets, or outdoor air pollution — I think the MPR rating system (as well as the Filtrete line of filters) is a better choice. Helping you select which MERV is Best for your environment. They look at how well a filter catches both large and small particles and rank the filters on a 1 to 10 scale. Their basic filter is rated at 100 and their most efficient filter is rated at 2800. Having aWant to find the best A/C filter for allergy relief? We have detailed home guides, product reviews, inspection advice, and much more. I wrote this guide after inspecting many filters during home inspections. Different materials have different amounts of "cling", and at <400 fpm the pressure difference would never be very high until the filter is pretty clogged up. We have your filter! MERV vs MPR vs FPR Ratings. The truthful statement is, "Filters with a MERV rating below 11 have lower than 20% capture efficiency between 0.3 and 1.0 microns. A high MERV at a 118 fpm isn't a useful way to gauge performance in a system running at 700 fpm. For comparison, a human blood cell is about 5 microns in diameter.Filtrete filters have MPR ratings from as low as 100 (equivalent to MERV 1) and they go as high as MPR 2800 (equivelent to MERV 14). 3M has designed their filters so that there is less of an initial HVAC pressure drop as well as over the life of the filter.And as stated earlier, microparticles are only measured (0.3 to 1 micron) on the MERV scale when it reaches at least 11.And the biggest difference between MPR and MERV is that MPR is only for rating the level of microparticle filtration — in the range of 0.3 to 1 micron in size. Available in MERV 6, MERV 8, MERV 11, and MERV

When you combine that with the difficulty of comparing FPR to MERV, it seems the best you can do with this scale is to use it as a rough guide. They start by saying, “FPR-10 is similar in strength to MERV-20, since they are both the highest rating value.” 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. Arie is the founder of Home Inspector Secrets, an online resource dedicated to helping people understand how homes work. MPR ratings range from a low of 100 (equivalent to MERV 1) and as high as MPR 2800 (MERV stands for minimum efficiency reporting value, and it is an HVAC industry standard for filter ratings.MERV was developed by ASHRAE (American Society of Heating, Refrigerating, & Air-Conditioning Engineers) in 1987 and has since then been adopted by many organizations and governments as a filtration standard.The MERV filter rating measures the amount of microparticles and macroparticles in the air — from 0.3 When a particle is in the 0.3 to 1 micron in size it is considered This filter rating system was developed by sending a aerosolized spray of test particles of uniform size through a filter and measuring the upstream and downstream particle quantity. He is a licensed home inspector in two U.S states and owns a residential and commercial inspection company (read his full bio on the About page). Smaller particles can be trapped and removed by higher MERV ratings.At Air Filters Delivered, we label our air filters by their MERV filter rating. And for most residential HVAC systems, MERV 11 is already overkill and not needed.In my opinion, if microparticles are a big concern for you because of allergies, pets, or outdoor air pollution — I think the MPR rating system (as well as the Filtrete line of filters) is a better choice. But make sure you can do that without reducing air flow and possibly damaging your system.The MERV rating on a filter reflects the performance a particular duct velocity (which is supposed appear on the label).

MERV vs. MPR vs. FPR Rating Systems air filter ratings explained. For MERV ratings, microparticles are only even measured when it reaches MERV 11 or higher. N100 achieves 99.97% filtration (same as HEPA).The famous virus is 0.060–0.120 μm. Now it's time to take…Before this year, probably few people could list even five things they could do to keep themselves from getting a cold or the flu from someone in their house who…Back in 2018 I wrote a series of articles on indoor air quality and filtration. These are the low quality fiberglass filters that some people purchase, and which makes home inspectors like me crazy.These low performing filters will only filter out things like carpet fibers, dust mites, dust particles, and some pollen.MERV 5-8 is representative of average HVAC filters. For reference, a typical dust … He is a licensed home inspector in two U.S states and owns a residential and commercial inspection company (read his full bio on the About page). WHAT IS THE DIFFERENCE BETWEEN MERV, MPR, AND FPR AIR FILTER RATINGS? "The reality is furnace filters are very high margin products that are very profitable to sell, and companies like Home Depot don't do much in the way of providing useful information to the customer.

This Website requires your browser to be JavaScript enabled.Pet Dander, Smoke, Smog, Coughing, Sneezing Dust Mites, Mold Spores, Lint, Household Dust, & PollenBacteria, Virus Carriers, Pet Dander, Smoke, Smog, Dust Mites, Mold Spores, Lint, Household Dust, & PollenLearn the differences between MERV, MPR & FPR to choose the best filter for your needs.The three air filter rating systems differ in ranges and were created by separate organizations.