dunno ray, just phoned me said "we live in hard water area and would like a limescale reducer fitted....but not one of them ones you have to top up chemicals in....you know a low maintainence one"
I know there are loads out there but are they any good?
Try Combi mate fitted a few of them really easy to install and do the job pretty well. They are about £130ish will need to change the balls every year but very easy to do.