A refrigerator includes a water conditioning cartridge having a filter for removing impurities from water and a temperature control unit for selectively developing cold and heated water that is released from a refrigerator dispenser. The temperature control unit is preferably formed from one or more thermal electric coolers. The thermal electric cooler(s) include a plurality of heat sinks that develop cool and hot temperatures to treat or condition the water. A fan is positioned adjacent the thermal electric cooler(s) to provide air exchange for the plurality of heat sinks. The temperature control unit conditions, i.e., heats or cools water passing from the filter to the dispenser depending upon a selected consumer preference.