There are various different technologies available but in most cases this is how an air purifier works. First the polluted or ‘dirty’ air is sucked into the air purifier via its air intake. There are air purifiers that have a washable pre-filter right at the start of the process to help remove larger particles but this is not always the case. The air is then passed through a carbon filter which is used to eradicate odors and again take out larger particles from the air. Next the air is passed through a HEPA filter which is made up of tightly woven fibres and is where the smaller particles are removed. You may find some air purifier systems contain electronic ionizers to help remove even more particles. Finally the air is then pushed out back in to the room. Often the effectiveness of an air purifier can be greatly reduced by its inability to move air properly.

This is essentially the quick explanation of how an air purifier works.

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