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<DIV><SPAN class=078020905-21042011><FONT face=Arial color=#0000ff size=2>This
all looks pretty good and, clearly you will always be in front with minimal use
and well-timed manual switch control, if only because the element works best
when the water is coldest. the most common reason for using timers is that
approximately 99.99% of consumers prefer it that way.</FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=078020905-21042011>Another reason is that automated temperature
control minimises health risks. <SPAN class=078020905-21042011>You don't
talk about your operating water temperature. If you are heating the water only
once a week it may be OK for a shower at say 40 degrees, but water tanks
are usually set at a minimum of 60 to kill off any legionnaires bacteria. Your
typical shower temperature is the ideal growth temperature for legionnaires, and
it is often illegal to install heater with the thermostat set below
60.</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=078020905-21042011>What
you don't talk about is your tariff programme either. Maybe you don't have one
and the power costs the same 24/7. But, if you do, you are likely to save a lot
more by coordinating your switching with it. This may mean curling up beside
thne HWS with a good book and waiting for the magic hour.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=078020905-21042011></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=078020905-21042011> </SPAN></FONT></DIV>
<P><FONT size=2>Nick Pyner<BR><BR>Dee Why NSW </FONT></P>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> <A
href="mailto:greenbuilding-bounces@lists.]On">greenbuilding-bounces@lists.]<B>On</A>
Behalf Of </B>Bob Waldrop<BR></FONT></DIV>
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<DIV>We put in an off the shelf mid-price electric water heater, and added an
on off switch, so most of the time it is off and we turn it on maybe twice a
week. People periodically tell me that that doesn’t save any energy, for
various reasons, and while it is true that I am not a scientist. . . as an
experiment we left it on 24/7 a couple of months in the fall when it wasn’t
especially hot or cold and our bill went up over a hundred dollars each month
(more than a thousand kilowatt hours) so I would say that the simple on off
switch does in fact save energy. Not to mention giving my poor frugal heart
pains when I opened the bill. The plan when we get more money is to add a
solar water heater.</DIV>
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<DIV><FONT color=#0000ff size=2></FONT> </DIV>
<DIV> </DIV>
<DIV>Bob Waldrop, Oklahoma City</DIV>
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