Dual evaporator air conditioning system and method of use

A dual evaporator air conditioning system (20) and method for use therewith to cool air in front (10) and rear (12) portions of a cabin (14) of a vehicle (16). The dual evaporator air conditioning system (20) includes primary (28) and auxiliary (30) HVAC units having primary (32) and auxiliary (36) evaporators, respectively to cool the air in the front (10) and rear (12) portions of the cabin (14). A heat exchanger (43) near the auxiliary evaporator (36) warms the refrigerant in the auxiliary evaporator (36) to maintain a minimum temperature of the refrigerant in the auxiliary evaporator (36). The heat exchanger (43) warms the refrigerant in the auxiliary evaporator (36) to prevent accumulation of liquid refrigerant and lubricating oil in the auxiliary evaporator (36) when the auxiliary HVAC unit (30) is in the non-cooling mode (121) while the primary HVAC unit (28) is in the cooling mode (118).