- 3 Stage Cleaning System Begins with the carbon filter to filter odors and larger particles such as cooking odors and dust. The second stage is a HEPA filter that filters 99.97% of airborne pollutants at .3 microns - 300 times smaller than the diameter of human hair. PlasmaWave TM is the final stage that uses postive and negative ions to remove odor causing airborne pollutants.
