A lot of companies try to confuse you with big words: HEPA-type, HEPA-like, HEPA-grade, 99%-HEPA, patented nanotech, ionizes, neutralizes, destroys, vaporizes, etc.
(Pro Tip: this is all b.s. made up by some marketing guy named Bob.)
HEPA is the ONLY filtration technology repeatedly proven to filter out 99.97% of airborne particles 0.3 micrometers (µm) in diameter, such as smoke, allergens, house dust, PM2.5, and PM10.