Ventilation open window wearing mask covid safety

SARS-CoV-2, the virus that causes Covid-19, can float in the air like smoke. Aerosolized particles can linger in poorly ventilated indoor spaces, spreading farther than 6 feet from its source. We need to think about controlling the source of the virus indoors, about ventilation (mixing more outdoor air with indoor air), and about air filtration and cleaning devices.

Bring in as much outside air as you can thru the HVAC system. Avoid re-circulating air. Important to measure CO2 levels when people are present. Levels need to be <800 ppm. ARANET4 is a great sensor that can be used to assess (coupon here). If you can’t ventilate through HVAC, open windows and doors for a cross breeze.

source: https://www.covidisairborne.org/resources/ventilate (visit for more languages)

Articles


CDC website now emphasizes coronavirus spreads in the air https://www.cnn.com/2021/05/07/health/cdc-coronavirus-transmission/index.html

Coronavirus is in the air. Here’s how to get it out.
https://www.vox.com/science-and-health/2020/8/19/21364031/coronavirus-air-purifiers-filter-hepa-merv-ventilation

How to stop student COVID spread as school year kicks into gear
https://www.goodmorningamerica.com/news/story/stop-student-covid-spread-school-year-kicks-gear-79431295

The Plan to Stop Every Respiratory Virus at Once https://www.theatlantic.com/health/archive/2021/09/coronavirus-pandemic-ventilation-rethinking-air/620000/

Vehicle ventilation

Covid study: How to avoid catching virus in a shared car
https://www.bbc.com/news/uk-wales-58202468

“For driving below 30mph (48kph), opening all four windows is most beneficial.
But on faster roads, opening two on a diagonal can have an even bigger impact.”

more to come…