The present invention relates to a hybrid-type complex expressions hot water production system. More specifically, the flows to the electric dust collection system, in the device for collecting the charged dust by a charge device, and a flow plate disposed on one side, a liquid flow, and the dust collecting the charged dust on the flow plate It is provided on the flow liquid dust collection section, and the flow plate and the counter position, including, by moving the charged the same polarity as the polarity of the charged dust to a said charging dust by a repulsive force to the flow liquid dust collection section for collecting the liquid relates to an electric dust collector includes an electric dust collecting system comprising a resist coating unit and the plate, the counter plate and the counter comprising a coating layer consisting of an insulating material.