What do HEPA and HEGA stand for?
HEPA is High Efficiency Particulate Arresting developed by the US Atomic Energy Commission. HEPA filters must remove a minimum of 99.97% of particles down to .03 microns. HEGA is unique to Austin Air and stands for High Efficiency Gas Absorption. A HEGA air cleaner combines a HEPA filtration system with an added military carbon cloth filter medium.