Abstract: Domestic steam iron including an ironing element or plate, a vaporisation element or vaporiser which is fed with water coming from a reservoir incorporated within the iron, and comprising a vaporisation chamber where the steam is generated which passes through the plate via a front opening of the vaporiser, to emerge into the exterior through holes formed in the plate, and also comprising heat element for each of the plate and vaporiser assigned to the plate and the vaporiser, and thermostatic temperature regulators for each of the plate and vaporiser, and thermal fuses of each of the plate and vaporiser, associated with the plate and the vaporiser, wherein the vaporisation chamber is provided with a rear outlet communicating with the front opening of the vaporiser by way of a pair of deep channels that are integrated in the vaporiser and extend co-laterally to the vaporisation chamber itself.