That would be my guess as well with regard to the low COP. In a few weeks I will be re-wiring the electric to the water heater, I am going to route it through a refurbished electric meter, so that I will be able to know for certain what my energy consumption is. I am also looking for a cheap water meter to plumb into the water line; then I would know quantitatively what my energy input was per gallon of water out.
Anyone know of a source for cheap water meters?
I just ordered 3 electric meters from Hialeah Meter Company, they were about 30 dollars each for an EZ-Read meter and meter socket, shipped. Seems like the most economical way to submeter, though it does require me to physically go and record the meters. For the price, I can deal with that.
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