Does a merv 13 filter stop COVID

Yes, a MERV 13 filter can help reduce the airborne transmission of COVID-19. MERV (Minimum Efficiency Reporting Value) measures a filter's ability to capture particles. A MERV 13 filter is capable of trapping particles as small as 0.3 to 1 microns, including dust, pollen, mold spores, and certain types of bacteria and viruses. The COVID-19 virus itself is about 0.1 microns in size, but it often travels in larger respiratory droplets or aerosols, which range from 1 to 10 microns. Therefore, MERV 13 filters are effective in capturing many of these droplets and aerosols that may contain the virus, improving indoor air quality.

While a MERV 13 filter can reduce the risk of airborne transmission, it is not a standalone solution for preventing COVID-19. Other mitigation measures, such as proper ventilation, wearing masks, physical distancing, and vaccination, are essential to complement the filtration system. Additionally, upgrading to a MERV 13 filter should be part of a comprehensive HVAC strategy, including regular maintenance and system balancing, to ensure optimal airflow and filtration effectiveness.