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How big should my (immersion) element be?

Discussion in 'Plumbing and Central Heating' started by PaulUszak, 13 Jan 2017.

  1. PaulUszak

    PaulUszak

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    I have a titanium immersion element in my water tank. It sounds as if it's on it's way out and I'm looking to replace it with another titanium one. How long should it be?

    Currently I'm using an 11", but I've seen 14" ones. They are both BEAB approved 2.25 BSP thread and either would fit the size of my tank. They're both 3kW, and there is only a few pounds extra for the longer one. It mounts horizontally.

    My thought is that a 14" element will run cooler per unit length. Might it therefore last longer as thermal effects will be less? Am I right, or does experience prove otherwise?
     
  2. Dan Robinson

    Dan Robinson

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    If it fits... go 14"
     
  3. dilalio

    dilalio

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    That's what she said! :sneaky:
     
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