Cistermiser Combimate is not a water softener. Water softeners work by removing the calcium and magnesium from the water, whereas the Combimate uses Siliphos as an anti-scaling agent to reduce the amount of scale deposits by keeping the minerals which cause scale in a dissolved and suspended state at higher temperatures. As a result most scale-causing minerals pass through the system instead of forming scale deposits on heating elements in boilers, kettles and other appliances.
Installing a water softener will prevent future build up of scale, but the Cistermiser Combimate will reduce previous build up of scale along with preventing any future build-up. Other methods to reduce scale deposits have been tried; however the Combimate system is unique in terms of its simplicity, effectiveness, reliability, cost and maintenance.