david lang wrote:
sPoNiX wrote:
Currently taking the CH apart and updating various things. The system
and pipework are over 30 years old and we live in a very hard water
area.

You can check your water hardness by entering your post code into a box on
www.calgon.com I have checked this with areas I know to be hard & softa
water and it hasn't failed yet.


Hmm. I beg to differ. Out of three postcodes of which I tried and which I
know the hardness of the water it managed a not too amazing 1 out of 3.

Rob