MERV ratings range from 1 to 16, and filters with higher ratings are more effective in trapping small particles than those with lower ratings. Generally, filters with a rating of 16 or lower are suitable for air conditioning systems in residential, commercial and general hospital settings. The MERV is a measurement that describes the efficiency of a filter in keeping particles between 0.3 and 10 microns away from the air. A rating of 11 is the standard for MERV filters, which are usually made of cotton and polyester fibers.
The indices range from 1 to 20, with 1 being the lowest level of filtration and 20 being the highest. The worst percentage of the six tests is selected as the official measure used to determine the MERV rating of a filter. When it comes to choosing between a MERV 11 and a MERV 16 filter, it is important to understand the differences between them. A MERV 11 filter is designed to capture particles that are larger than 10 microns, such as dust mites, pollen, mold spores, pet dander, and dust.
On the other hand, a MERV 16 filter is designed to capture particles that are smaller than 10 microns, such as bacteria, smoke, and viruses. If you use a higher MERV index that traps more particles, you may need to change the filter more often. This is because higher MERV filters are more effective at trapping particles, but they also become clogged more quickly. Therefore, it is important to consider your needs when deciding which type of filter to use.
If you need a filter that can capture smaller particles, then a MERV 16 filter may be the best option for you. However, if you only need to capture larger particles, then a MERV 11 filter may be sufficient.
