not gonna get involved in an argument but I live in a silly hard water area and if you want my tuppence worth:
magentice devices- limited effect, about as good as useless.
polyphoshordoobrie whatsits- better but not a complete cure and require regular refilling and many units are poorly built and end up leaking at some point or another.
whole house water softener- very good and guaranteed, but require regular filling with salt and many boiler manufacturers don't recommend using with their boilers, even though most of the softener companies and independant tests have shown no detrimental effect, even on cast ally heat exchangers.
If fitted, you'll need an unsoftened supply to your taps and to the boiler header tank.
That must have been those magnetic bracelets which you can wear in your car and on a plane ( as long as its modern enough to not use a magnetic compass ).
They definitely work because the magnetic field on your wrist magnetises the iron in the haemoglobin in your blood. They make you look and feel 20 years younger and prevent lime scale in your arteries!
I can agree that there dont seem to have been any independent tests on the magnetic water treatment but nor has there been any apparently on the polyphosphate treatment either.
Thanks again for all your advice guys-the internet at it's best. I've decided to fit a Permutit PSM65v2, as I believe this will end my scale woes, plus provide other benefits in the long term. Olly.
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