HNTAS: New build heat networks - draft assessment procedures for District Distribution Networks
Draft procedures that Heat Network Technical Assurance Scheme (HNTAS) registered assessors will need to follow to assess a heat network’s compliance with HNTAS technical requirements.
Applies to England, Scotland and Wales
Documents
Details
These draft assessment procedures for district distribution networks detail the activities to be undertaken to provide assurance that the obligations in the Heat Network Technical Assurance Scheme (HNTAS) Technical Specifications are fulfilled.
A district distribution network is a pipework system that is external to buildings and which distributes thermal energy from one location within a heat network to another. This pipework can be comprised of buried or above-ground pipework, and typically contains pipework, valves, heat meters and other ancillary equipment.
The documents are for use by:
- heat network assessors
- heat network developers
- heat network designers
- heat network operators
These assessment procedures correspond to the HNTAS: New build heat networks - draft technical specifications for District Distribution Networks.
Next steps
We will be requesting feedback on the information in these documents. We will run a change management process in parallel with the HNTAS technical standards consultation which closes on 15 April 2026.
We will make final versions of these documents available before the scheme starts.
Updates to this page
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Added link to HNTAS consultation.
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First published.