shower choice?

Discussion in 'Plumbing and Central Heating' started by jonnie84, 20 Feb 2011.

  1. jonnie84

    jonnie84

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    Hi all Im just after a bit of advice regarding choosing a shower.

    I dont want one of those that turns cold when another tap is turned on but one which runs at a constant temperature and flow.

    Am i right in thinking i need a power shower? If so can anyone recommend a make..... Mira.... Triton any good?

    Any advice would be great thanks

    Jon
     
  2. Burnerman

    Burnerman

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    Time to visit B&Q mate where they have various displays and information on what type of shower you can have regarding your heating system - i.e suitable for combi, gravity or just electric.
    From what you have said, you need a thermostatic shower.
    A power shower uses tanked hot and cold water, but it has a pump built inside its housing. They work well too, if you don't have much head of tanked water.
    John :)
     
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  4. TicklyT

    TicklyT

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    Much is down to the type of hot water system you have. If you have a combi boiler, then a power shower or a shower pump isn't an option. Temperature fluctuation can be controlled by a thermostatic mixer, but only if the boiler can supply sufficient output fot the shower and the other open tap. Similar for unvented systems, but the limiting factor is the cold mains flow rate rather than boiler output.

    Conventional gravity systems can provide a reasonable flow rate through a suitable low pressure mixer valve without a pump or power shower, as long as you don't want a jet of water like a firehose. A lot of brassware on the market is made for high pressure systems only, and isn't suitable for a gravity system. Manual or thermostatic versions are available, but may take a bit of finding.

    Power showers give more oomph than a gravity system can deliver.

    A shower pump can sometimes be added to a gravity system to make the most of brassware intended for higher pressure supplies

    Any pumped system may need some modifications to the water feeds to and from the hot cylinder to work successfully. Some consider the pumps are very noisy.

    Stored hot and cold water capacities may become significant if using a shower with a high water flow rate.

    Electrically heated showers running from a cold mains water feed only generally deliver quite low flow rates. The highest power ones can at best deliver about half the flow of even a moderate power combi boiler.
     
  5. jonnie84

    jonnie84

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    Thanks for the detsiled reply Tickly very helpful.

    My boiler is a vaillant and its a condensing boiler if this makes any difference and the water pressure is extremely high!
     
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