Living with Covid the focus of expertise has shifted from epidemiology to airconditioning and ventilation

According to CDC (Centre for Disease Control and Prevention) based on available epidemiological data and studies of environmental transmissibility factors, surface transmission is not the main route

Guidelines from the CDC suggest consulting experienced heating, ventilation, and air conditioning (HVAC) professionals with regards to implementation of strategies and improvements that can increase the delivery of clean air and dilute potential contaminants. Building systems that provided healthy, code-compliant indoor air quality prior to the pandemic can be improved for pandemic occupancy often using less costly interventions.

This report outlines the strategies needed to restrict transmission of Covid19 through air-conditioning systems