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Should I replace my Copper Hot water cylinder - it's 30 years old

Discussion in 'Plumbing and Central Heating' started by mpooley, 23 Nov 2021.

  1. mpooley

    mpooley

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    Simple question really But would appreciate advice please.
    There is nothing wrong with the cylinder as far as I can tell; It's just 30 years old.
    We live in a hard water area and I imagine it's got lots of lime scale in it
     
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  3. Harry Bloomfield

    Harry Bloomfield

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    Is it causing any problems, like slow to heat up? How do you heat it, immersion or via gas boiler?
     
  4. Gasguru

    Gasguru

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    Is is heated with a boiler and if so make/model of boiler.
     
  5. mpooley

    mpooley

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    No I don't think so! Nothing we've noticed anyway. Its heated with an oil boiler sometimes but mostly an immersion heater using solar power
     
  6. mpooley

    mpooley

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    The boiler is a Grant VORTEX PRO - output of 46KW
     
  7. Gasguru

    Gasguru

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    A 30 year old cylinder is likely to have an inefficient calorifier (the coil of pipe that transfers heater boiler water to your domestic stored hot water).
    Being an oil boiler and unable to modulate I suspect the burner constantly cycles (especially as the cylinder comes up to temperature) wasting energy.
    At the other extreme the "tank in tank" cyclinders can be fed with significant kw and rapidly heat up with little cycling (if any).
     
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  9. JohnD

    JohnD

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    Also, if you buy a new one, as well as being faster to heat and better insulated, people now typically buy bigger ones. This will enable you to get more benefit from your solar. It might hold enough for a couple of baths or several showers.

    You might like to invest in a water softener as well.
     
  10. mpooley

    mpooley

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    Thanks What's a tank in Tank cylinder?
     
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  11. mattylad

    mattylad

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    If you do, take the old one to a scrap yard, coppers worth bob or two...
     
  12. Gasguru

    Gasguru

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    Google ACV cylinders...the DHW cylinder is surrounded by another cylinder and the whole water jacket is heated by the boiler.
     
  13. mpooley

    mpooley

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    Thanks Have had a Look. I'll have o check some measurements it looks like it's going to be too big
     
  14. Gasguru

    Gasguru

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    There are many options unvented (if you've sufficient pressure/flowrate), vented etc, even a custom manufactured cylinder, it's whether you can justify the expense against increased boiler wear and inefficiency.
     
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