combimate or magnetic conditioner, which is best

Discussion in 'Plumbing and Central Heating' started by calvert, 10 Sep 2021.

  1. calvert

    calvert

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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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  3. muggles

    muggles

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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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  4. BoilerBob

    BoilerBob

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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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  5. Sim777

    Sim777

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    how often does this happen? I guess it may be a problem with plate hex?
     
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  7. muggles

    muggles

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    Hard to say how often it happens but it can be a problem with both plate and multipass designs
     
  8. HERTS P&D

    HERTS P&D

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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
     
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  9. muggles

    muggles

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    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.
     
  10. calvert

    calvert

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    Many thanks for sharing your knowledge. Looks like HS38 it is then
     
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