I hope that I'm not bringing up a topic that has already been discussed (I could not find an answer but maybe I missed it).
We are looking to get a new hot water system as our old electric one is about to give up the ghost. I have heard much conflicting information about Heat Pump and Solar Hot Water systems.
Given that all brands will be slightly different, is their any general rule of thumb about the ongoing cost of a Heat Pump vs. Solar Hot Water system? Say I was looking at two systems with the same capacity, waht would be cheaper to run?