How Often Does the DIY’s HEPA Filter Need to Be Replaced?

Filter replacement is calculated based on the time of use. According to our tests in Beijing, the DIY HEPA filter can last for about 1000 hours. If you switch on 8 hours the DIY everyday, seven days a week, you need replace the filter every three months.

Learn more about our range of simple, no-nonsense DIY’S HEPA filters here »


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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.