The 6 residential units of the apartment building were equipped with decentralised home stations (EWS). The special feature: the stations are electronically controlled, i.e. in interaction with the circulation pump in the basement, the heat demand can be more optimally designed, only the quantities of heat that are actually necessary are circulated, if necessary, the circulation can also be completely switched off during the night hours. The consumption values can be transmitted to the ratiotherm central controller in the cellar, as these are networked with each other. So the actual consumption data can be called up by the landlord of the house comfortably from the distance over Internet. In the heating cellar a transfer station with 60kW achievement was installed, as buffer a 1,300 L stratified tank with stratified insert 5,0 was used, in order to be able to supply the 6 parties at each time optimally and efficiently with warm water and heating warmth.