Described is a method for cleaning fabrics, such as garments and the like, comprising the following steps: a) preparing a compartment for containing fabrics; b) preparing a quantity of cleaning fluid in fluid communication with the containment compartment; c) inserting the fabrics in the compartment and isolating the containment compartment with respect to an outside environment; d) sucking air from the compartment, in a substantially continuous manner, for adjusting the pressure in the compartment for containing the fabrics to a pressure less than the atmospheric pressure so as to allow the evaporation of the cleaning fluid and the introduction into the compartment of the cleaning fluid in the vapor phase, for cleaning the fabrics.