It may well be more natural promoter, from the bio and ecology, sometimes the progress of some set back the others. The water treatment is part of the case. For example, devices that heat water as boilers and water heaters are refined to produce hot water with less energy. Ok, it saves electricity and gas, or it does not consume anything by solar systems. However, all these modern amenities environmental label need softer water (maximum 10 to 15 ° F). However, water from the public network in Europe are becoming harder. So what type of water treatment should be chosen to anticipate scaling worries? Here is a comparison of two systems to guide his choice.