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    • Cardew
    • By Cardew 12th Mar 08, 11:00 PM
    • 24,693 Posts
    • 11,740 Thanks
    • #2
    • 12th Mar 08, 11:00 PM
    • #2
    • 12th Mar 08, 11:00 PM
    Very little in the price of the shower itself.


    There is a difference in the wiring and circuit breaker requirements.

    A 8.5kWh shower will use a standard 40amp RCB - a 10.8kWh won't.

    You need to get advice from a certified electrician, as these days you cannot, by law, do such electrical work yourself.

    However the installation of a 10.8kWh shower could be considerably more expensive than a 8.5kWh.


    Misread your post - 2.3kWh extra will cost approx 20 pence an hour in running costs.

    However the above may be factors you had not considered???
    Last edited by Cardew; 12-03-2008 at 11:06 PM.
  • kookaburrah
    • #3
    • 12th Mar 08, 11:00 PM
    • #3
    • 12th Mar 08, 11:00 PM
    Anyone: please correct me if I'm wrong.

    The difference between the two is 2.3kW, which I assume is consumption in kWh.
    If that is the case, for a 10 minute shower, you'd be spending 0.383 kWh more on the more potent shower.
    If we assume you shower every day, and 1 kWh costs you 9.262p (mine does):

    365 x 9.262 x 0.383 = £12.95 a year per person more for the more potent shower, or

    £47.89 a year per person for the less potent shower and
    £60.85 a year per person for the more potent shower

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