Discusses the problems of transition from open to closed systems of connection of consumers to the heat network. On the basis of fundamental analysis of the advantages and disadvantages of the various connection schemes of buildings comparison of energy efficiency and reliability of open and closed systems of a heat supply. Basic conditions guaranteeing the possibility of the device of the closed heating systems in buildings, присоединненных to thermal networks on the open circuit. Shows the need for reconstruction of water supply systems and power supply of the building when it transferred from open to closed scheme accession to the heat network.
Keywords: heat supply, district heating, closed heat supply scheme, open circuit heat supply, individual heating unit, reliability of heat supply, energy efficiency.