The present study introduces an innovative method called "electronic descaling (ED)," which was developed as a means to prevent precipitation fouling in a heat exchanger. The operating principle of the ED technology is presented using fundamental physics laws. The validity of the ED technology was tested by evaluating the performance of a full-scale chiller over an entire cooling season. The ED technology eliminated scales in the condenser tubes, resulting in the improvement of chiller performance and in energy savings.Units: I-P