Can I Turn Off my Air Purifier When I Sleep?

Even in a room with the doors and windows closed, our tests found that particulate levels increase very quickly after you turn off your purifier. Even though we can’t see it, dirty air is entering our homes constantly. We recommend keeping the purifier on while you sleep, or whenever you want to breathe clean 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.