The Blue shower systems use the heat of the wastewater to preheat the cold water supply. By doing this, the demand for hot water drops significantly which means less energy consumption. In turn this allows for a smaller hot water system.
The installation costs of the hot water system and the utility bill will therefore be lower. The energy performance of the building will improve considerably and less CO2 will be emitted.
The Blue has been specifically developed for multi-story construction and projects where the highest possible efficiency must be achieved on one floor.