The MERV 13 classification is a high-efficiency air filter that can reduce airborne particles such as dust, lint, dust mite residues, pollen, pet dander, mold spores, bacteria, microscopic allergens, virus carriers, most smoke, smog, oil smoke and lead dust by up to 95%. This type of air filtration is often used in hospitals to provide maximum protection for patients and staff. Although the nominal values are no higher than those of the MERV 16, high-efficiency particulate air (HEPA) filters trap the smallest particles at a faster rate than even the MERV 16 and are generally used in operating rooms, clean rooms and other settings that require absolute cleaning. When it comes to air filtration, MERV 13 filters are considered to be quite effective.
They are capable of trapping up to 75% of particles between 0.3 and 1.0 microns in size. However, it is important to note that this type of filter is not as effective as a HEPA filter when it comes to capturing the smallest particles. The coronavirus measures 0.1 microns, which is too small for a MERV 13 filter to capture. HEPA filters are the ultimate solution when it comes to air filtration and far exceed what a MERV 13 can do.
We have ratings ranging from MERV 8 to MERV 13, covering the efficiency most homes need. Many of the existing air conditioning (heating, ventilation and air conditioning) systems also find it difficult to adopt a MERV 13 because of the greater load carried on the fan by the finer filter media, which can reduce airflow if the system is not designed to withstand this type of filter. Considering the threat posed by the spread of COVID-19 and other germs, upgrading a building's air filter to a HEPA is a much more effective step than simply to a MERV 13. This is due to the small size of the virus (0.06 to 0.12 microns); the more efficient the filter, the better. In addition to controlling airborne bacteria, most tobacco smoke and contaminants released when sneezing, MERV 13 filters are also effective in controlling dust, pollen, dust mites and pet dander.
