Carbon Filter for DIY Air Purifier


Simple, effective activated carbon filter, for capturing VOCs including formaldehyde, benzene, smells and other chemicals. Fits the DIY1.1 and Cannon air purifiers.


Introducing the Carbon Filter for DIY Air Purifier!

Your Purchase Includes1 × DIY Air Purifier Carbon Filter (fits DIY1.1 & Cannon)
Dimensions L × W × H (cm)30 × 1.5 × 30

Carbon filters trap unwanted smells, toxic fumes, and other volatile organic compounds (VOCs). When polluted air passes through the filter, the high surface area of the activated charcoal traps the unwanted gases.

Do I still need a HEPA Filter AND a Carbon Filter?

Yes, activated carbon is not very effective at filtering particulate pollution such as PM2.5. It is better to include a HEPA filter for a complete filtration of your indoor air.

It is also recommended to refrain from using a carbon filter along with a HEPA on the Original as the air flow rate is not sufficient. Instead, if you think you have a serious VOC problem, it is possible to exclude the HEPA filter.

Filter stacking order:

DIY Carbon Filter HEPA filter stacking order

Does everyone need a carbon filter for their DIY Air Purifier?

Not necessarily, as not all homes have dangerous levels of harmful gases or VOCs that would call for a carbon filter. VOCs are more common in homes:

  • with recent home renovation or repainting
  • with smoke or other offensive odors
  • near a source of gas pollution like a factory

If you have inflammation or asthma symptoms, you may also consider using a carbon filter.

Not sure if you have a VOC problem?

You can run a “poor man’s VOC test” by sniffing the air where you air. If you can smell any plastic smells, or the kind of smells you get in a new car, off paint, or from new furniture, you may well have a VOC issue.

We also run air quality audits in Beijing, so can visit you to test your air quality. Learn more here.

Additional information


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Smart Air is a social enterprise and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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