Through five special filters, including a reverse osmosis filter, the water is completely freed from salts, metals, and germs that are commonly found in tap water. The purification process removes chlorine, odors, heavy metals such as lead, copper, cadmium, and mercury, as well as agricultural chemicals, hormones, antibiotics, pesticides, fungicides, herbicides, pharmaceutical residues, carcinogenic organic chlorinated compounds, radioactive substances, asbestos fibers, tar compounds, nitrites, nitrates, bacteria, viruses, fungal spores, and cysts.

As a result, the water leaves no residues during evaporation and does not form limescale deposits. Furthermore, Ultra Pure Water, due to its low pH value of 6.0 to 7.0, can even absorb deposits (up to a certain extent), ensuring that the cooling system remains permanently clean.