A method of heating and cooling at least one zone of a passenger compartment in a vehicle includes the steps of (a) pumping a coolant through an auxiliary coolant loop, (b) changing a temperature of the coolant utilizing a first heat exchanger associated with a refrigerant loop via an expansion device in the cooling mode, and a second heat exchanger associated with the refrigerant loop and (c) moving air through a third heat exchanger through which coolant moves, that third heat exchanger positioned in the passenger compartment, and at least one vent positioned within at least one zone of the passenger compartment.