With shower water a lot of energy goes down the drain. In a well insulated house is nowadays the largest part of the energy consumption for taking showers. Heat recovery is the solution. With the ES-drain of Herwin-Energie half of the energy can be saved in the most economical way.
Herwin-Energie has over 15 years experience with heat recovery from shower water. The innovative linear drain , the ES-drain is after a test period of almost 2 years ready for large-scale applications. The ES-drain meets all quality standards and the efficiency has been tested by KIWA. Moreover, the ES-drain has a number of unique innovative properties, such as no fresh water connections in the floor. The drain is equipped with a leakage detection according EN1717, with acoustic. Moreover there is a double safety against leakage into the floor. The material of the heat exchanger is pure copper and the housing is of AISI316 , the best and most expensive stainless steel for this application.
The principle of heat recovery from shower water is very simple.
Heat is extracted from the drained water by means of a heat exchanger and immediately fed back to the cold tap water that is used for showering. So the water is not reused and no storage is required.