The filtration efficiency of the HEPA filter is 99.95%, and the filtration efficiency of the H12 filter used by the Aurabeat AG+ Silver Ion Plasma Sterilization Air Purifier is 99.7%, so the difference between the two is only less than 0.3%. Also, the general HEPA filter does not have antiviral property, so the high-efficiency silver ion air filter of Aurabeat AG+ Silver Ion Plasma Sterilization Air Purifier is even better.