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Research project

ErrEnEff – Influence of individual room controllers on the heating demand of a single family house with low temperature heating distribution

In Switzerland standards allow floor heating systems without individual room controllers, as long as the calculated design flow temperature is below 30 °C. The argumentation is that a self-regulating effect comes into operation, because of the low temperature differences between heating surface and air temperatures. In the master thesis of Igor Mojic (part 1), it was investigated, whether the use of thermostatic valves leads to energy savings in the case of heat distribution systems with low flow temperatures. Based on the master thesis a second study was done with inputs from the AWEL Zürich (part 2).


This project is supported by the AWEL Zürich, department of Energy.

Final report (part 1, PDF, German)

Final report (part 2, PDF, German)

Contact:  Daniel Philippen