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Check availability at your exact address
Heat networks are local, so there is no single lookup that answers the question for every home. Find the official checker recommended by your municipality, utility or national authority. Depending on the location, you may need a full street address or just a postcode.
- In Montpellier, residents are directed to France Chaleur Urbaine’s address search: France Chaleur Urbaine.
- Denmark’s consumer guidance describes a postcode search that can show availability and identify the supplier: Danish consumer guidance.
- Wien Energie asks residents to check their residential address: Wien Energie’s availability checker.
Use the local authority’s own website if you are unsure which checker applies. The examples above illustrate different local processes; their labels and rules should not be assumed to apply in other countries.
Understand what the map or checker result means
Read the status carefully. A map may show an existing network, a planned extension, an area considered suitable for a future network, or a confirmed connection option. Those are not equivalent.
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- Existing network nearby: The street may be served, but the map does not prove your building is connected or that a connection is available.
- Suitable area: This is an indication of potential, not a promise that a network will be built. Hamburg explicitly describes its suitability map as an initial indication; binding connection commitments come from network operators: Hamburg heat-network information.
- Planned or underway: Ask whether the extension has a firm schedule and whether your building is included.
- Connection possible: Treat this as a lead to verify with the operator, including capacity and any technical conditions.
- Outside the network: Ask whether expansion is being considered, but do not base a heating replacement plan on an unconfirmed possibility.
Wien Energie distinguishes among an existing connection, a connection currently possible, expansion underway, expansion planned and an address outside the network. Its checker also warns that some address data may not yet be current, so confirm an uncertain or unexpected result with the provider.
Contact the operator and verify the building
Use the checker or municipal map to identify the operator, then ask about your specific property—not only your street or postcode. Hamburg directs residents to its maps for operator details and says only operators can make binding connection commitments.
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Ask the owner, building manager or property administrator whether the home is already connected and which heating installation is recorded. In Denmark, the Building and Housing Register can help identify the building’s heating installation. If you rent or live in a shared building, the owner or property manager may need to handle a new building connection or installation; Wien Energie advises residents to consult them when a functioning connection is not available.
Get the conditions, costs and timing in writing
Before deciding, request written confirmation from the operator covering the property and the proposed connection. Include these questions:
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- Does the operator serve this exact building, and is it accepting new connections?
- Is capacity available now? If not, what would need to change?
- Is an extension planned, and what is the credible connection date?
- What is the connection charge, and what equipment costs—such as a heat exchanger—would be additional?
- What technical requirements apply, and what work is needed inside the building?
- Does the building need modernization, such as installation of a central heating system?
Costs and timing vary by place and property, so a general figure is not a reliable substitute for an address-specific estimate. Denmark’s guidance notes that connection fees typically apply when an unconnected property chooses to connect, as well as possible heat-exchanger expense. Hamburg notes that some connections can take several years and may require substantial building work.
Compare feasible heating options before committing
Availability alone does not show that district heating is the best choice for a building. If a heat network and alternatives such as a heat pump are feasible, compare them using the property’s actual requirements:
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- Total lifecycle cost: Include the connection, equipment, building work and ongoing costs.
- Timing: Compare the earliest credible connection or installation date and how reliable that schedule is.
- Technical fit and space: Consider the building’s requirements and available indoor or outdoor space.
- Ongoing responsibilities: Compare operating and maintenance effort and who is responsible for them.
- Decision-making: Check ownership, landlord or building-association constraints before treating an option as available to you.
Hamburg’s guidance recommends weighing full costs and practical factors such as space and operating and maintenance effort; it notes that heat pumps can be competitive even in a network area. If a heating replacement is urgent or the decision is complex, seek location-specific advice.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Use local rules, not another country’s assumptions
The address-checking workflow is broadly useful, but map labels, provider processes, connection obligations and costs differ by jurisdiction. For example, Denmark’s consumer guidance includes country-specific heating-supply rules; those rules should not be applied to homes elsewhere. Use the official checker and operator serving your location, and ask them to confirm the status of your building.
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