In order for an air purifier filter to be categorized as a True HEPA filter, it must remove 99.97% of airborne particles as small as 0.3 microns in size. This is a standard regulated by the United State Department of Energy.
A micron is difficult to imagine, so we put together this chart to help you visualize the size of the particles we're talking about:
A filter's efficiency refers to how many particles are trapped and removed from the airflow passing through the filter. At 99.97% efficiency, out of 10,000 particles to pass through the filter, only 3 escape. This includes smoke, dust, pollen, pet hair and dander, mold spores and dust mites.
The Better Choice
The market is flooded with 'HEPA-type' filters that appear to be similar to True HEPA filters. However, these filters aren't regulated. While they may claim to be 99.9% efficient, they avoid mentioning the size of the particles filtered. This means that larger particles, like smoke and mold spores, are left behind to float around your home.
LivePure air purifier filters meet True HEPA standards so your home environment remains happy, healthy and pure.