Provided is a broadband heat pump system including: a heat pump module including a plurality of heat pumps that supply hot water with different levels of temperature; a heat source supply module that introduces a heat source from one heat source or selectively introduces a heat source from one or a plurality of heat sources among heat sources with different levels of temperature so as to produce a heat source with a desired temperature; and a controller that controls the heat pump module and the heat source supply module to select one from the plurality of heat pumps to be appropriate to a temperature of hot water requested by a demand source and to receive a heat source with a necessary temperature from the heat source supply module so that the selected heat pump is able to supply hot water with the requested temperature. Thus, hot water with various levels of temperature can be supplied to a desired demand source, and heat sources with various levels of temperature including a new renewable energy source can be used so that energy availability increases.
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