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 Steam cleaning is really a misnomer for there really is no steam!. Hot water with a cleaning solution is extracted via a wand. You go over the carpet a section at a time, overlapping your last pass. As the hot water is extracted, the wand is also vacuuming up the water and the dirt. Some wands have plastic hoses that are clear.
When you look at the water being extracted, it often looks brown and dirty. You can see that the carpet is really being deep cleaned. It is a very good idea to vacuum the carpet first to pick up loose and surface level dirt. Since the carpet takes up to 8 hours to really dry, you cannot vacuum it afterward. However, as it dries, the carpet nap rises and the result is a very clean, fresh and "new- appearing" carpet.
The big advances in the water extraction method the past few years have made this one of the best ways to clean carpets. The machines are now more powerful, and, one of the best improvements, the water extraction power has been increased so that drying time is shorter.
Recommendations from Shaw Industries (the worlds largest carpet manufacturer)
READ: 5 Methods of Cleaning Carpet from Allergy Consumer Review
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