I don't know of any domestic combi that you can't use softened water on.
However I know a fair few where the heating system must not have softened water - due to the aluminium heat exchanger.
As long as the two are kept separate (and water regs sees to this) I can't see a problem, OldBuffer?
However I know a fair few where the heating system must not have softened water - due to the aluminium heat exchanger.
As long as the two are kept separate (and water regs sees to this) I can't see a problem, OldBuffer?