How does the PaceController make a compressor more efficient?

Cooling does not depend on the amount of time the compressor is running, but rather on the amount of refrigerant being moved. The PaceController moves more refrigerant per unit of energy-consuming compressor run time. The density of the refrigerant is greatest during the first few minutes of compressor run time, when the thermal expansion valve is wide open, so each compressor stroke can move more refrigerant.

In addition, the refrigerant continues to change state when the compressor is not in the run interval, and the circulating fan continues to distribute the cooled air. Third, the reduced running time and the circulating fan minimize frosting on the evaporation coils, supporting a more efficient heat transfer. Lastly, less icing means less energy is used in a defrost cycle.