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<DIV><SPAN class=140055022-26022012><FONT face=Arial color=#0000ff size=2>I'm
afraid the only experience I have is with those of my own design and
manufacture. I can't recommend any one in particular, but the practicality of
retrofitting is by far the most important consideration. It might not be
feasible with any type, but, if you have a storey height or a decent hill to
work with, it could be painless. </FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN class=140055022-26022012><FONT face=Arial color=#0000ff size=2>You
are right in that the small ones are limited to one shower. They can supply
several basins but it appears the flow restriction can kill them as quickly as
the lack of heat. Stiebel make big ones that will handle multiple showers
but they are seriously expensive and don't ask where the power comes from. I
have never seen one in domestic service. I don't think a small instant to the
kitchen sink is such a great idea in a cold climate but, if you've already got
it, you've already got it, and you would already know all you need to know. We
still have a one gallon high temperature storage tank exclusively for the
kitchen sink, which was once common practice.</FONT></SPAN></DIV><BR>
<P><FONT size=2>Nick Pyner<BR><BR>Dee Why NSW </FONT></P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
greenbuilding-bounces@lists.bioenergylists.org
[mailto:greenbuilding-bounces@lists.bioenergylists.org]<B>On Behalf Of
</B>Sacie Lambertson<BR><B>Sent:</B> Monday, 27 February 2012 3:46
AM<BR><B>To:</B> Green Building<BR><B>Subject:</B> Re: [Greenbuilding] old
question revisited-tankless heater<BR><BR></FONT></DIV><FONT size=+0><FONT
face=verdana,sans-serif>Thanks for the comment Nick. Do you have
experience with more than one drain water heat exchanger and would you
recommend one over another?<BR><BR></FONT></FONT></BLOCKQUOTE></BODY></HTML>