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Mains water pressure v bigger combi boiler?

Discussion in 'Plumbing and Central Heating' started by ct888, 2 Jan 2013.

  1. ct888

    ct888

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    Hi - I am trying to obtain a decent hot water flow rate to at least 2 showers simultaneously. At present if one person is having a shower and another tries to, then the water flow drops to a trickle. I currently have a Worcester Bosch green star 30 with a shared water supply - it is a ground floor flat with 2 flats above. My question is do I need a bigger boiler, a different type of boiler or a separate water supply or a combination of these? I would really appreciate some advice as the water company says a separate supply and plumber a new boiler.
     
  2. flameport

    flameport

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    If you want two showers to run at the same time with a decent performance, a combination boiler is not the answer.
    Doesn't matter how good your incoming mains water is, the limiting factor is how much heat can be put into the water by the boiler.

    A system which heats water in a stored cylinder or other vessel is the solution. Whether that is supplied from the mains or from a tank and/or pump depends on how good your mains water supply is.
     
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  4. neiltheplumber

    neiltheplumber

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    how many people live in the flat? what type of showers are they, electric or mixers? what is your cold mains pressure like? do you have a shared mains water supply?
    No point putting a bigger combi in if you aint got the mains water pressure to start with!
     
  5. neiltheplumber

    neiltheplumber

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    ooh just noticed you say you are on a shared water supply!
     
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