Goodman’s bi-block units use the “inverter” technology to maximize the performance and the control of the temperature. A power inverter allows the bi-block unit to continuously adjust the flow of coolant for heat transfer by varying the compressor speed according to the demand of heating or cooling thermostat. This technology eliminates the full operating cycles followed by a complete stop for some compressors. The elimination of start / stop cycles help to increase the efficiency of the compressor and extend the life of the components. It also helps reduce the fluctuations caused by the operation of an air conditioner or heat pump on the electric charge of the house.