Air Conditioning May Be Spreading COVID – Web MD

Air conditioning is also risky because of the way air handlers work. When outdoor temperatures are extreme, HVAC systems adjust the mix of fresh air they pull in to save energy. That means the hotter it is outside, the more indoor air recirculates, which means, “You’re breathing a higher percentage of the same air that other people are exhaling,” Nardell says. If someone in the building is shedding the new coronavirus, it can build up in the recirculated air.

Source: Air Conditioning May Be Spreading COVID

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