This video gives a good explanation of steam cleaning vs hot water extraction. Most carpet cleaners who use steam cleaning in Tampa FL are actually using hot water extraction for steam cleaning carpets. It's very important to understand that true steam cleaning is only effective when cleaning hard surfaces, like counter tops or tile floors. Using steam to clean soft surfaces is not nearly as effective as hot water extraction.
Something else to be aware of is that hot water extraction usually includes using additives in the hot cleaning solution, it's typically not just hot water. Whether there is a conditioner or cleaning agent in the hot water there is usually something there to help remove soil.
Chem-Dry of Tampa FL uses something a little different in their version of steam cleaning, it's called hot carbonated extraction. Their hot cleaning solution is carbonated to help break up the soils in carpet and upholstery. The great carbonation in a hot cleaning solution is that it's much more effective at cleaning then other cleaning agents. A more effective a cleaning solution means less is needed for cleaning. Chem-Dry of Tampa uses 80% less hot cleaning solution then your typical steam cleaning system. It provides and extremely effective clean with very little moisture.
Less steam cleaning solution means faster dry times. Chem-Dry of Tampa's drying times are on average two hours. That means your carpet can be expertly cleaned and dried in just a few hours.