"John Rumm" wrote in message
...
wrote:

Does anybody have experience of the combimate, are there benifits in
plumbing it into an existing system?

I have one. Not having taken the plate heat exchanger apart on the boiler
I can't comment on how effective it has been so far other than to say it
being going four years now without any problem in a fairly hard water
area.

Will it eventually clear scale from existing pipes?

No, and it won't help with scale deposition resulting from evaporation, so
sinks, shower screens etc will still rapidly acquire hard water marks
after cleaning.

Showershine type of sprays prevents that.