Summer is settling in, the thermometer is climbing and the question of the use of air conditioning during a pandemic resurfaces. Especially since confined environments seem to be particularly favorable for the spread of Sars-CoV-2, as has already been observed for other coronaviruses like Sras. A study carried out in China thus showed that out of 318 clusters identified in 120 cities, only one occurred outside, suggesting that “Sharing an interior space is a major risk of infection”.
The role of heating, ventilation and air conditioning (HVAC) systems in the spread of Covid-19 is the subject of several studies, the most relayed concerning the case of a restaurant in Canton, China, where a customer not yet developed symptoms was the first link in a whole chain of contamination. And only the customers who were on the “path” air blown by the air conditioning system was sick.
Other researchers are interested in the case of a