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Improving
ventilation in indoor spaces is an important way to reduce the risk
of infection from respiratory infections such as COVID-19, whether
the COVID-19 community levels in
your area are low, medium, or high. You can improve ventilation in homes, offices,
and schools by taking low-cost or moderate-cost steps such as opening
windows, using fans, and/or using a portable HEPA air cleaner.
CDC
recommends that you take multiple steps to protect yourself and
others from COVID-19, including getting and staying up to date on
your COVID-19 vaccines, wearing masks, and avoiding crowds. Another
step you can take is to improve ventilation.
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How to Improve Ventilation in Your Home
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There
are many low-cost and moderate-cost steps you can take to improve
ventilation in your home:
- If your home has a central heating,
ventilation, and air conditioning system (HVAC) that has a filter,
set the fan to the “on” position instead of “auto” when you have
visitors. This allows the fan to run continuously, even if heating
or air conditioning is not on.
- Bring as much fresh air into your home as
possible, including opening doors and windows when it’s safe to
keep them open.
- Filter the air in your home. Check with your
landlord, building manager, or maintenance staff about improving
filtration if they replace the filters in your home’s HVAC system.
- Consider using a portable HEPA air cleaner.
- Turn on the exhaust fans in your bathroom and
kitchen.
- Use fans to improve airflow.
- Limit the number of visitors in your home and
the time spent inside.
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Using
CDC’s Interactive Home
Ventilation Tool,
you can learn how to decrease the level of COVID-19 virus particles
in the air in your home. See how particle levels change as you adjust
ventilation settings in your home by opening a window, running a
portable HEPA air cleaner, and improving your HVAC filter if you have
an HVAC system.
If
you will have visitors in your home, improving ventilation is one way
to reduce the risk of you or your visitors getting COVID-19. Your
chances of getting COVID-19 increase the longer you stay in poorly
ventilated and enclosed spaces where someone is infected with
COVID-19. And if someone in the home has COVID-19, improving
ventilation can also help reduce the risk of other people in the home
getting COVID-19.
Visit
CDC’s Improving Ventilation in Your
Home page to
learn more about these and other ideas to increase ventilation. You
can also visit the Ventilation in Buildings and Ventilation in Schools and
Childcare Programs
pages to learn more about improving ventilation in those kinds of
settings.
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Email: EPIC@cdc.gov
Centers
for Disease Control and Prevention
1600
Clifton Rd
Atlanta,
GA 30329
Questions?
Contact
CDC-INFO
800-CDC-INFO
(800-232-4636) TTY: 888-232-6348
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Centers for Disease Control and Prevention
1600 Clifton Rd Atlanta, GA 30329
1-800-CDC-INFO (800-232-4636) TTY: 888-232-6348
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