District heating: basics

In short: District heating supplies buildings centrally with heat generated at heating plants or combined heat-and-power facilities and distributed via a pipe network. Users no longer need their own boiler.

In more detail: Hot water or steam is transported from the producer to connected buildings, where it releases energy via a heat exchanger.

In detail

• Generation: District heating can come from waste incineration, waste heat from power plants, biomass, or increasingly renewable sources.
• Heat exchanger: Inside the building, a transfer station passes heat to the house’s own heating system without mixing the water circuits.
• Advantages: No own boiler, no maintenance of a heating system, and often efficient use of industrial waste heat.
• Disadvantages: Reliance on a single provider, limited price negotiation, and dependence on the district heating network’s expansion.
• Connection obligation: In some municipalities, there is a requirement to connect to the district heating network in certain areas.
• Climate footprint: How environmentally friendly it is depends heavily on which energy sources the particular network uses.
• Cost structure: Billing usually consists of a base price plus a usage price, similar to other energy sources (waermepumpe, heizkosten-senken-und-richtig-heizen).