Does Running an Air Purifier Dry the Air in Your Home?

Data shows that air purifiers with HEPA filters have no effect on a room’s humidity. Air purifiers with carbon filters may slightly decrease the humidity.

See the full data on how we tested whether air purifiers dry out the air in your home »


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Smart Air is a social enterprise that creates simple, no-nonsense air purifier and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.