Residential properties

The Fadmatt housing estate consists of several blocks of flats and three central heating stations. These supply the individual substations with heat via long-distance pipes. The current operating status of the network cannot be reliably assessed with the existing infrastructure. The aim is to systematically record the operating status and minimize network losses by adjusting the settings in line with demand.

In collaboration with the technical FM, the property was retrofitted with an intelligent monitoring system. LoRa sensors record the flow and return temperatures in all substations, making the operating behavior transparent and allowing it to be analyzed in a targeted manner. Room temperature measurements in selected apartments serve as a reference for the thermal behavior of the building. The recorded data is evaluated in the online Oxoia platform, which identifies inefficient behaviour and provides specific suggestions for optimization. Within one day, all central heating units and substations were equipped with the necessary sensors. A total of 44 pipes and 9 rooms were recorded.

By continuously monitoring the heating circuits and reference apartments, the heating settings could be better adapted to the thermal building physics. Inefficient behavior in the DHW loads and long-distance pipes was identified and rectified. The optimizations began in spring 2025; their effect will become apparent in winter 2026. The expected savings were calculated and reported using the EnAW check-up tool.

• Energy consumption: -175 MWh/year
• CO2 emissions: -27 t CO2eq/year
• Operating costs: -27,000 CHF/year