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Indeed I have. I was unsure about raising them because of climate
considerations, but the essential principle is the same anyway. It's
just a matter of a PV-powered resistance heater, or a PV-powered
heat pump. If the latter is a practical option, it's a hell of a
lot better one, and means the PV power available can be deployed
elsewhere. <br>
<br>
Our state certification is a little bit rough'n'ready in this arena,
but heatpump is rated highly. Standard resistance heating was
simply banned from new construction for some years. It then quietly
came back on the lists some time ago but, while they don't actually
say so, I suspect you have no chance of getting a pass with it if
you don't have some PV. On the other hand, including PV absolves you
from all sorts of sins - resistance heat electric storage HWS
included.<br>
<br>
Heat pump HWS have attracted some controversy of late with claims
that the capital and maintenance costs may outweigh the savings. I
don't believe it. The tank may well fail before the fridge gear
does. I don't know much about them and I would be more worried about
noise. <br>
<br>
Nick Pyner<br>
<br>
Dee Why NSW<br>
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<div><font face="Courier New">Antonioli Dan <a
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wrote:</font></div>
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heat pump?<br>
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