You can reduce the spread of COVID-19 at work by improving the air quality indoors. Some diseases (including COVID-19) spread through the air. This happens when people infected with a virus breathe it out. Other people in the room or nearby can then breathe in the virus and become infected.
The quality of the air inside a building can affect how much a virus builds up indoors. Improving indoor air quality can help lower the amount of virus in the room. Diluting, mixing, and filtering the air are three ways
you can improve indoor air quality.
When an HVAC system is unavailable, you can use a portable fan, place it near an open window pointing towards the window and away from the room. Meanwhile, leave other windows and doors open--ideally on the opposite side of the room. This promotes a light cross draft to blow stale air out of the room and draw in fresh air.
tips to reduce COVID -19 indoors (PDF) for more info. Workplaces can learn more about Ventilation and Filtration using the
2 page fact sheet (PDF).
Follow these 7 tips to help your PAC work its best:
Before purchasing your PAC Select PACs that use HEPA filters.
Know the square feet (sq ft) of your space.
Choose a PAC that has a Clean Air Delivery Rate (CADR) that is 2/3 of the room's area (in sq ft).
After purchasing your PAC
California employers can review the
Interim Guidance for Ventilation, Filtration, and Air Quality
in Indoor Environments.
Skilled Nursing Facilities
Since COVID-19 transmission risk increases in poorly ventilated indoor environments, it's important to know how to set up well ventilated spaces. Read about frequently asked questions from skilled nursing facilities.
Improving indoor air quality creates a healthier school environment by reducing COVID-19 and other diseases that spread through the air. Learn more here:
Information for School Districts on Purchase of Filtration and Air Cleaning Devices (PDF)
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