In addition, the unit's two-in-one water-tank system features a heavy-duty bladder inside for clean water, which empties and mixes with the cleaning formula during operation. The dirty water that gets pulled out of the carpets collects around the outside of the bladder, which means the clean and dirty water never mix. The unit's wide cleaning path covers more ground in less time, while the 20-foot power cord spares users from unplugging and re-plugging when cleaning larger rooms. The PowerLifter is not a steam-cleaning machine, so don't expect the same results that steam can deliver. It is, however, an inexpensive alternative to professional cleaning, without the hassle and expense of carting a rental machine back and forth. The unit comes with a 8-ounce bottle of Fiber Cleansing Formula and a dual-purpose Scotchgard-enhanced detergent that both deep-cleans carpet and protects it from future dirt and stains. The 12 amp full-size upright deep cleaner measures 19 by 11 by 44 inches and carries a one-year limited warranty. --Mary Park