UK Plumber Forum 

A place of resource for Plumbers and Gas Engineers in the UK.

Put your Central Heating System question in here.
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#8151
G3 unvented is a qualification to allow a plumber to repair, service or install unvented cylinders and their components.
It is a legal requirement in U.K. and is to hopefully have any of the above work safely carried out.
The unvented cylinders require a yearly service by G3 plumber to keep their warranty as well as unit fully functioning and safety, so best having it done.
Doing any unqualified work on unvented for a customer is definitely a no no
#8155
If the explosion dont get you, the scalding water will, even i dont touch em!!! :lol:

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