Patented 4-wheel design makes turning in tight places easy and balances total weight, even full of water, for easy maneuvering. Lift-off recovery bucket-no drain hose. Patented self-adjusting, self-leveling brush and vacuum shoe combine for superior cleaning of all carpet lengths and uneven floors. Fully adjustable handle for greater operator ease, increased leverage on stairs and over curbs plus compact storage. Upright-mounted vacuum plus intercooler system extends motor life.