What is the difference between the 19XR and 19XRT design?

The 19XRT incorporates Carrier's patented energy recovery turbine to reduce the power consumption of the chiller. We utilize the refrigerant pressure differential between the cooler and condenser to drive a turbine wheel attached to an extension of the motor shaft. By recovering this otherwise wasted potential energy we reduce the power consumption of the motor. Physically the 19XRT includes additional interconnecting piping between the turbine and the heat exchangers which does increase the size slightly.