When it comes to air filtration, two of the most commonly used rating systems are the Minimum Efficiency Reporting Value (MERV) and the Filter Performance Rating (FPR). It can be difficult to understand the difference between these two systems, but knowing their ratings can help you get the most out of your heating and cooling system. The US conglomerate 3M also created the Microparticle Performance Classification (MPR) system, which measures how well an air filter can capture particles smaller than one micron.The FPR rating system ranges from 1 to 12, while the MERV rating system ranges from 1 to 20. The FPR 10 has a similar strength to that of the MERV 20, since both have the highest rating value.
The MPR is the measure of the filter's ability to trap air particles smaller than 1 micron. MPR indices range from 300 MPR (basic) to 2800 MPR (premium).Two ways to measure the effectiveness of an air filter are a minimum efficiency reporting value (MERV) and a filter performance rating (FPR).
Comparing FPR and MERV
is an important step when selecting an air filter. The MPR specifically details the ability of a filter to capture different types of particles, but it only measures intermediate particles.Because some common particles are smaller than that range, the MPR index isn't always the best indicator of a filter's quality.Match the MPR score to the type of particle you are most concerned about. In terms of effectiveness, it's hard to choose between a MERV score and an FPR score. Both are useful, but the FPR may be easier to understand, since it uses a number system that is more intuitive. FPR scores are filtered from one to ten, with ten being the best.The FPR is a simple system that provides a clear score.
On the negative side, it only applies to products you can find at Home Depot. Trust FPR when you buy a filter from Home Depot. In other cases, you'll need to use one of the other classification systems.For the average consumer, it is difficult to compare the MPR to the MERV or the FPR to the MP or even the FPR to the MPR. But when in doubt, opt for a filter with an ideal MERV rating.
The MERV is the standard in air filtration and is a reliable system.Fortunately, you won't have to make a long list of pros and cons between MERV and MPR or spend hours comparing FPR to MERV. Instead, you can rely on each of these ratings, since they basically measure the same characteristics of an air filter. To get the best air quality in your home, you should change your filters regularly. Even if your filter has a fantastic MERV or FPR rating, you should change it every few months.Often, it's helpful to set a reminder to change the air filter.
Whether you choose the MERV rating system, the MPR system, or the FPR system, make sure you choose an air filter with the appropriate rating given your home conditions. This is because there are different standards to meet, so you'll see some air filters with the MERV rating, while others are rated MPR or FPR. The following table explains the relationship between the numerical scales of the MERV classification system and the FPR system.Understanding how these ratings work together can help you make an informed decision when selecting an air filter for your home or business. Knowing which type of filter will work best for your needs will ensure that your home or business has clean air and optimal performance from your heating and cooling system.
