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.
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