I am also amazed by this-but does that motor really draw 12A?In most vacuumsdoubt that the motor is loaded to the current suggested on the vac nameplate-its to make the consumer beleive that the machine is more powerful than a lower amp one.I have Royals,Kirbys,Hoovers,Direct air system vacs that have motors only 2.5A that can outclean the "cleane air" 12A monsters.Its also the DESIGN of the vacs fan-filtering system and its airpath.All the filters on vacs today you do need the big motor in order to pull the air thru all those filters.The direct air machines like Kirby's ,Royal classics,and older Hoovers,etc have their fans close to the item being cleaned-so very high efficiency.Their filtering ability may not be as good though.The clean ir vac makers like to emphisize this.In the New Hoover vac-is it a direct air system?-the fan is AHEAD of the filter system.And is the fan a larger diameter than the twin fan model-a larger fan can move the same amount of air at a lower motor speed-not only longer life-but quieter as well.