Gas boiler died

[Slarti]

Good luck with it, and here's hoping for a really cold spell so you can see how it all works

Given the length of the warranty, I think I'd rather wait until October for that.

Late October, preferably


Slarti

[moorfield]

Good luck with it, and here's hoping for a really cold spell so you can see how it all works

+1 We've had the leaking heat exchanger in our combi replaced again recently - second time in 4 years. We always thought its failed because of hard water/limescale, but the last engineer had a more plausible theory that very cold snaps can freeze/expand the water moving around some internal parts and crack them open, particularly if boiler is not regularly used, inlet pipework is not well insulated or sited north facing.

[stewamax]

But if the boiler has a frost-stat (which kick in at around 4degC) this simply shouldn't happen unless the boiler is switched off.
If, since it is a combi AND if it were the hot-water ('DHW') plate heat exchanger that failed rather than the central heating one - combis typically have both, then limescale (or sheer bad luck) is the culprit.