I have a cleaning company -lrb- residential -rrb- and I use these in all the house and apartment . it doesnt have a beater bar so it doesnt tear up carpet and floor . it get in around chair , sofa , table , toilet , up on ceiling , across wall , up stair with no hassle . I also have scoliosis so I orginally buy these for the back issue . I also use this in my own house . I have no issue with this machine . the first one I buy 5 year ago , not off amazon but same make and I have not have to take it in once . remember , this go to 2 house a day , five or six day a week , for 5 year . Amazon have it for half of what I pay for my original ! yay 2 thumb up . .5 star all the way -lrb- think of the dream it be to use on stair ! -rrb-