Collection

Heat Network Technical Assurance Scheme (HNTAS): draft Code documents

Draft new build and existing heat network technical specifications and assessment procedures to help heat networks demonstrate compliance with the Heat Network Technical Assurance Scheme (HNTAS).

From:
Department for Energy Security and Net Zero
Published
15 December 2025
Last updated
5 January 2026 — See all updates

New build heat networks: draft technical specifications

New build heat networks: draft assessment procedures

Existing heat networks: draft technical specifications

Existing heat networks: draft assessment procedures

Updates to this page

Published 15 December 2025
Last updated 5 January 2026 show all updates

  1. Added draft technical documentation for existing heat networks.

  2. First published.

Contents