This chapter provides an extensive survey of the DHSs. For this purpose, the significant components of a DHS have been described and discussed, including the heating station (HS) with its energy resources (fosil fuel-fired boilers, heat and waste heat recovery boilers, cogeneration technologies utilising the Brayton and organic Rankine cycles, the electricity-driven chiller trigeneration power plant, renewable energies, and a waste heat and biogas combined heat production system), classified by type, the heat distribution network, and end-consumers. For the combined heat and power (CHP) heat source, the primary energy-saving index is defined, and the exergy associated with fuel consumption is estimated. A comprehensive discussion about pump control in HSs, analysis of the energy efficiency of flow control methods and optimisation of heat carrier distribution systems in HSs is performed. Additionally, information is presented regarding the pipes and the topology of the heat distribution network, solutions are included for connecting the RES to the DH network and the interconnection of consumers, and the energy, environmental and economic performance indicators of a DHS are defined. Finally, the evolution of DHSs is analysed, emphasising the fourth and fifth generations of DH networks, showing their compatibility with heat production technology, and discussing conventional and advanced control of DHSs.