World Health Organisation (WHO) advice on Air Conditioning

World Health Organisation (WHO) advice on AC and Infection Control Poorly ventilated (not AC) buildings affect air quality and can contribute to the spread of disease. Microorganisms, such as those causing tuberculosis and legionnaires, can be transmitted by ai rconditioning systems, particularly when they are poorly maintained or when the number of air exchanges per hour in a room is insufficient. Filtration systems can be installed in mechanical ventilation to stop those harmful microorganisms, particulates, gases, odours and vapours - so they can be removed. An increase in air flow and ventilation where the climate allows (opening windows and doors and using air conditioning for higher air exchange rates) will help combat this. 

The statement form REFCOM to support this is: There is no scientific evidence to suggest this is the case. From our point of view we should be educating our clients; any airborne contaminants can be Covid-19 Policy and Guide V0.0 Author: SHEQ Manager 8 Adcock FAQS for Covid –19 (Coronavirus) minimised, if not eliminated, by proper and effective filtration and regular cleaning and maintenance of ventilation systems.