CUI
Published 4 November 2026, 18:37
Código Universal de Instalação
The code of a gas installation or supply point, used when setting up gas at a particular address. It helps the supplier quickly find the right connection in its system. You can usually find the code on an old bill or ask the property owner for it.
Where you come across it. Connecting gas or changing your contract with a supplier.
The CUIG often appears alongside it, and people may mix the two codes up in everyday life.