Calmat is an eco-friendly water treatment system that protects the whole piping system and appliances against existing scale deposits and rust. The Calmat-Impulse-Technology is based on the principle of physical water treatment. Special electronic impulses change the crystallization process of the liquid calcium, this way the hard scale loses its adhesive power. The technology works exclusively with capacitive electric impulses and doesn't use magnetic fields. Calmat operates without the use of any salt or chemicals and requires no maintenance.