In Bavaria a rapidly scaled up the water a little later then the kettle, the coffee and more ... After we let the water run through the previously PerlCo we save descale us the constant. It tastes, the water has no residue through the filter and is absolutely clear. The filter can be easily replaced and keeps depending on consumption of about 200 liters, so with us 1 1/2 months, then you should change. Highly Recommended!