This website uses cookies
The web site is now storing only essential cookies on your computer. If you don't allow cookies, you may not be able to use certain features of the web site including but not limited to: log in, buy products, see personalized content, switch between site cultures. It is recommended that you allow all cookies.
800-680-1220 / +1 651-490-2860 (US) All Locations


Is there a link between humidity and virus transmission?

Is there a link between humidity and virus transmission?

Humidification and reducing transmission risk

Ventilation testing instruments for HVAC systemsStudies have shown that virus transmission is reduced when the humidity is between 40 and 60% relative humidity (RH).

Increased indoor humidity is only possible if the HVAC system has the capacity to meet the recommended levels, which may be higher than what was originally intended in the design phase.

Additional humidification or dehumidification capacity may need to be added to the system for proper control.

Additional Resources

Coronavirus (COVID) Response Resources from ASHRAE and Others

ASHRAE’s Position Document on Infectious Aerosols

Can we answer a question for you?

Find a rep or distributor near you