According to market data collected by the government, most heating networks are actually municipal heating networks (85%). There are two types of heating networks: district heating and community heating. First of all, be clear about what the heating / hot water layout is, check if the property has an electric or gas boiler, if not, it is likely that it is in a heating network. Heating networks require a certain density of heat demand to be economical. The geographical distribution therefore reflects the fact that district heating networks, and in particular district heating networks, are located in urban areas, new development areas and certain rural areas. Some heating networks contain a thermal interface unit inside each property.