Washing machine comprising: - a washing basket supported inside a washing tank suitable for containing the washing liquid and that can be closed by means of a door, - heating means arranged inside the washing tank, - a loading system (6, 7) suitable for supplying mains water into the washing tank, - a discharge system (9, 10) suitable for discharging the liquid contained in the washing tank, - a recovery tank separated from the washing tank, said recovery tank being suitable for containing a portion of recovered liquid - a control unit with a program selector configured so as to automatically carry out a washing program comprising: B) loading mains water into the washing tank and currying out a first wash cycle, in which said first wash cycle comprises: B1) a washing step that uses the water contained in the washing tank and activates the heating means so as to heat the water in the washing tank; B2) a rinsing step that uses the water contained in the washing tank with the heating means deactivated, - recycling means (10, 17, 23) configured so as to introduce, during one of the wash cycle steps, the portion of recovered liquid from the recovery tank into the washing tank, and - recovery means (18, 19) configured so as to convey, after at least one step of the wash cycle, one portion of liquid used during the wash cycle from the washing tank into the recovery tank, characterized in that the recovery tank is formed in the door and comprises an inner wall facing inside the washing tank and an outer wall opposite to the inner wall and facing outwards from the washing machine, wherein said inner and outer walls (21, 20), also form corresponding inner and outer walls of the door. - a washing basket supported inside a washing tank suitable for containing the washing liquid and that can be closed by means of a door, - heating means arranged inside the washing tank, - a loading system (6, 7) suitable for supplying mains water into the washing tank, - a discharge system (9, 10) suitable for discharging the liquid contained in the washing tank, - a recovery tank separated from the washing tank, said recovery tank being suitable for containing a portion of recovered liquid - a control unit with a program selector configured so as to automatically carry out a washing program comprising: B) loading mains water into the washing tank and currying out a first wash cycle, in which said first wash cycle comprises: B1) a washing step that uses the water contained in the washing tank and activates the heating means so as to heat the water in the washing tank; B2) a rinsing step that uses the water contained in the washing tank with the heating means deactivated, B) loading mains water into the washing tank and currying out a first wash cycle, in which said first wash cycle comprises: B1) a washing step that uses the water contained in the washing tank and activates the heating means so as to heat the water in the washing tank; B2) a rinsing step that uses the water contained in the washing tank with the heating means deactivated, B1) a washing step that uses the water contained in the washing tank and activates the heating means so as to heat the water in the washing tank; B2) a rinsing step that uses the water contained in the washing tank with the heating means deactivated, - recycling means (10, 17, 23) configured so as to introduce, during one of the wash cycle steps, the portion of recovered liquid from the recovery tank into the washing tank, and - recovery means (18, 19) configured so as to convey, after at least one step of the wash cycle, one portion of liquid used during the wash cycle from the washing tank into the recovery tank,