combimate or magnetic conditioner, which is best

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I have a Combimate fitted about 450mm above a Grant combo boiler in a very warm room (29ish degrees C). A different heating engineer to the one who fitted it 6 years ago, says I should replace it with a magnetic water conditioner as the Combimate can do more harm than good to the boiler. what are your recommendations from the experienced engineers on here please? Thanks in advance.
 
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Yes, the siliphos balls can break apart and block the heat exchanger. Magnetic ones are snake oil as far as I can see, but I've had good success with the Hydroflow HS38
 
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To be honest I’ve seen all sorts of devices each with its own merits but the weirdest one was 4 old telly magnets sawn in half strapped over the main incoming pipe and believe it or not no scale anywhere in the boiler or system. Bob
 
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Hard to say how often it happens but it can be a problem with both plate and multipass designs
 
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I fitted a 'Water King' over 25 years ago to a house and there is zero limescale in the property, I even replaced the immersion element about 5 years ago and the cylinder was completely clear of any limescale inside.

Andy
Good to know. Never heard of that one before but seems to operate on a similar principle to the HS38. Always nice to gave options and installers with practical experience of these things actually working.
 
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Many thanks for sharing your knowledge. Looks like HS38 it is then
 

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