Abstract: The invention relates to a heating installation of the type having a heat pump, radiators having valves, and a control device having a desired value generator for controlling the upstream temperature that delivers as an effective desired value, a guided desired value guided by guide parameters such as the external temperature and/or a reference room temperature. The invention involves providing a heating installation of the aforementioned kind in which the efficiency and life of the heat pump are improved. Pursuant to this objective the control device has a comparator which compares the guided desired value with a variable limiting value higher then the downstream temperature by a predetermined temperature difference and the desired value generator reduces the effective desired value at least down to the variable limiting value when the latter is exceeded by the guided desired value.