How will hard water affect the Steible-Eltron Tempra 20?

Tankless water heaters are prone to build scale inside their heat exchanger tubes. The rapid temperature increase in the units cause the minerals in untreated water to quickly form scale. I work at FREIJE Treatment Systems, maker of The EasyWater "No Salt" conditioning alternative. Our treatment does a great job of eliminating the formation on "limescale" and will protect your tankless water heater. Please feel free to visit the web site and review the results from another tankless manufacturer. http://www.easywater.com/tanklesswaterheater.aspx 888.766.7258 James Warren x129