Indoor air quality is not a simple, easily defined concept. It is a constantly changing interaction of complex factors that affect the types, levels, and importance of pollutants in indoor and outdoor environments.
Indoor air quality has never been under such a high public focus as it is today. Specially during COVID-19 pandemic when there is a strong indication that the SARS-CoV-2 as ‘airborne’, as the virus may attach to smaller or larger particles (solid or liquid), a wide range of particle size has to be considered from size of human hair down to nanoscale.
Buildings with or without HVAC systems, should use energy efficient air filters, as advised by International bodies to mitigate the risk of virus concentration and maintain overall air quality in buildings.
