New HEPA filtration system, with a push of a button, easily change HEPA filter as needed. Re-engineered larger debris opening to stop dirt from clogging. Xtra heavy duty cord mounting system. Hi-Tech fire retardant sound deadening gel for quiet use during daytime or night time cleaning. Patented Perfect® lock stretchable attachment hose, dependable screw-in fit so hose locks in without fail, hose stretches form 3' to 6'.