District Heating consists of a centralized system of production and distribution of thermal energy to an entire neighborhood, district or county, producing energy from one or more central and  distributed through a network of pipes to exchange points in buildings. It consists of 4 subsystems: production, distribution, exchange and use.

 

It is mainly used in places where heat demand is high and individual consumers are relatively close.

 

This system depends on the energy source used, technology and size of facilities, and can cover from a small number of houses to large metropolitan areas.