Due to the direct access to the condenser on the back side of the appliance, leakage protec- tion of the PCM elements is of vital importance in the long term. In a previous study (Sonnenrein et al., 2015), we were able to reduce the power consumption by about 10% through an installation of a newly developed copolymer-bound PCM into a standard wire-and-tube condenser. It was shown that power consumption can be reduced in a defined manner by varia- tion of the condenser’s PCM loading.