this thing really suck !! I have a small condo with wood , tile , rug & carpet . the PSV 1800 do a great job on all surface - I be amaze at how much it pick up when I empty the filter housing for the first time . great battery - it have never slow down when I have be use it . it be portable and compact - I would highly recommend this unit for a small place -lrb- under 1000 sq ft -rrb- like mine .