Steam cleaning uses boiling hot water that is converted to vapour to dislodge dirt. Therefore, less water is used during the cleaning process. However, the moisture is not extracted from the fabric and instead remains trapped in. Hot water extraction uses warm water that is injected directly into the fibres; there is no steam. It is then extracted with a sucking action. At the end of the cleaning, the carpet is left almost dry. When it comes to an efficient carpet cleaning service, the hot water extraction method is better.