In the Berlin Plant Protection Office, the technical systems are to be improved energetically. For this purpose, the refrigeration machines are renewed and propane is used as a natural refrigerant. The ventilation units are optimised in terms of control and control as well as a hydraulic adjustment of the heating system. Heating, ventilation and cooling of the cabins in cabin 5 are optimised energetically as part of the energy concept through structural and plant-technical measures. In the lighting, a conversion to LED incl. motion detectors (if required). Overall, the measures significantly improve the climate balance.