I've been trawling the forums and have found a wide mix of systems that people use for shw and was recently recommended to go down the path of a wetback.
I can't find any independent info or reviews on red circle solar:http://www.redcirclesolar.com.au/close-coupledheat-exchange-systems
they seem very similar to what we saw on on most roofs in Vietnam and they say they are made in China.
It also appears that they distribute through ultimate solar, whose address is next door in vic.
We are thinking of pairing it with a yunca monte wetback fireplace.
I've always found this forum to be a great place to bounce ideas or to learn from others' experience and am keen to find out what your thoughts are?