A plate heat exchanger comprising a first fluid (cooling media) supply channel and a first fluid discharge channel arranged though a heat plate package; with at least one second fluid (hot media) supply channel and at least one second fluid discharge channel also arranged through the heat plate package. The plate heat exchanger further comprises the addition of one or more auxiliary fluid heat exchange circuits including a conduit heat exchanger adapted to fit inside either the first fluid supply or discharge channels when acting as an after cooler, or the second fluid supply or discharge channel when acting as a pre-heater.