"John Stumbles" wrote in message
...
Peter Parry wrote:
On 9 Apr 2005 06:14:04 -0700, (Ellen
Rawlinson) wrote:

I want to be able to run both showers at once (as there
will be six people in the house), and my plumber thinks the only way
to do this is with electric showers.

A cheap combi will give you a twin shower effect on a par with that
achieved by using an aged and incontinent rat in place of the shower
head. Two electric showers (assuming you have a single domestic
supply to the house and need both to operate together and with other
appliances on) may have to be so small that their effect will be even
worse.

A 24kW combi should give you two
showers at least as good as the
highest-powered (10.5kW) electric
showers. In the depths of winter and
early spring when the incoming water
is cold that means you won't get a
very good flow of water at a comfortably
hot temperature, so make sure
the bath/shower rooms are warm because
otherwise it'll be a miserable
experience showering.

Electric showers are made by Satan.

However if the place is for rental then
as others have pointed out you
really need to consider what will
happen _when_ the boiler breaks down
(they all do at some time or other). A
stored water system (conventional
gravity fed, unvented or thermal store)
will allow you the option of
electric backup heating for water,
though not for space heating.

Wrong. An integrated thermal store can have electric backup for space
heating. Also the stored water, unvented cylinder or thermal store, will
have to be in a very large cylinder, which is quite expensive to buy, never
mind fit.

anathema (not to say heresy) to admit
it but A Certain Person's suggestion of
2 combis for redundancy has some merit,

For for only redundancy. It will deliver the requirements more effectively
and cheaper than any other method.

though you need a foolproof way
of knowing when one of them has
failed otherwise you still only hear
about it when they've both gone and
there's no hot water or heating and
you have to call out a heating engineer
at emergency call-out rates. (And you
can't rely on tenants telling you that one of
the showers has packed up or there's
no heating in certain rooms when
you really do want to know this: ask
any landlord - tenants aren't like
that!)

You should read. One combi does one shower one does the other. If one
doesn't work with 6 people in the morning they will soon let you know.




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