My old hot water tank Stiebel Eltron has incredible 26 years working without a problem. Now was then but a new and mature in reliability, it should of course be a Stiebel Eltron again. The fast was found under the unamended in all these years type designation. It was followed by a flawless delivery and assembly went super fast, because in 26 years the fixture has not been changed. Just the old and the new suspended suspended. Better it is not easy! The function is perfect, the water is hot and fast that it drips, is hard to remember. Am absolutely thrilled!