Ooh thanks everyone! That makes me feel a bit better about using it over Christmas.
He may still be right about replacement overall. It’s an old system and on top of that it looks like whoever installed the hot water cylinder originally installed an indirect cylinder, but the flat has no...
We had a bit of a plumbing nightmare at my partners flat this week. We tried to replace the element in his immersion heater (hot water only) and didn’t quite turn off the cold water. Which was fab when the element seal broke. Stupid us.
Anyway we turned off the supply to the cold tank while we...