The influence of the latent heat storage elements integrated into the spaces of the meander-shaped, foamed evaporator of refrigerator K-12020S-1 (see Fig. 2, top) on the evaporator tem- perature (TE) and the fresh-food compartment temperatures (T1, T2 and T3) is shown in Fig. 5. Six hundred grams of PCM was sufficient to significantly increase the evaporator tem- perature, approximately triple the cooling cycle duration and lower the compressor’s relative runtime from 27% to 21% under comparable fresh-food compartment and environment con- ditions.With the latent heat storage,the minimum temperature of the evaporator was increased by ~10 °C from −22.6 °C to −12.5 °C and averaged over compressor runtime by ~8 °C from −14.2 °C to −6.2 °C.Altogether,this leads to a reduction of power consumption of up to 12%.