Nowadays producers of household and industrial appliances need to optimize the efficiency of their products to diminish electric consumptions. In the case of refrigerators, the compressor is the component characterized by the highest electric absorption. The aim of the present study is to develop a compressor control algorithm for an industrial chiller to improve the performances and reduce the energy consumption. Results obtained by the authors in previous studies, encourage to the implementation of the fuzzy logic for regulator design. In particular a refrigerator for pastry shop was considered as the object of the study. A fuzzy controller was developed for the particular application by software simulation. The controller has greater performances of the PID and optimal linear regulators designed by the author for the same system. Subsequently a fuzzy adaptive procedure was defined to generalize the control algorithm, and allow the implementation of the controller to different refrigerators.