For offices and establishments that recirculate the air, the risk of spreading COVID-19 is still there.
Air conditioners usually come in two different types. The first type takes in fresh air from the outside, cools it, and circulates it into a room. The second type simply cools and recirculates the same air inside the room.
These recirculating air conditioners are most common in centralized air conditioning systems, and split-type airconditioners. These are most commonly used to cool large spaces, such as offices, bars, and restaurants.
Dr. Shaun Fitzgerald, in an interview with The Telegraph, shares, “The recommended strategy now, if you have one of these split units, is to throw the window open and sacrifice your desire for a cold or cooler environment. If there is a modicum of wind it will move the air around. If you can’t open a window, turn the unit off.”
Opening a window with an air conditioner on might seem counter-intuitive at first, but it could help mitigate the risk.
Certain split-type air conditioning units also have a feature to turn off the recirculation mode. If your air conditioner has this option, it would be best to turn the recirculation off.