Category

Technical

17/02/2022

WHAT IS THE DIFFERENCE BETWEEN HEPA AND MERV FILTRATION FOR FACILITIES

One major step towards significantly improving indoor air quality is the upgrading of a building’s HVAC and filter to one that is rated at MERV 13 level or higher. MERV stands for ‘minimum efficiency reporting value’, and a MERV 13 filter is effective at capturing more than 75% of particles sized 0.3 to 1 microns which means it is reasonably effective against mould spores, bacteria and smoke.  However, the Sars Cov 2 virus and Influenza particle size is around 0.1 microns, so whilst a MERV 14 filter is definitely a... Read More