This study was compared of numerical analysis that effects of waste hot water supply order on the performance of type II absorption heat pump. There are two kind of waste hot water supply order, regular series flow and reverse series flow. In the regular and reverse series flow, it was investigated that interaction of between the temperature of hot waste water with a heat exchanger. In the certain effectiveness of solution heat exchanger, As the temperature increse, the steam generation and COP increases. Thus, the higher temperature of hot waste water in the Type II absorption heat pump, the more steam generation rate and COP can be obtainded.