So we just completed our second pool build and we have basically committed to installing solar for pool heating. Unfortunately, or fortunately, depending on how you look at it, our only available roof space is north facing due to our PV solar on the south roof. I've taken a close look at the roof angle (~23deg) and sun angles through the months where we would actually need the heat and am fairly confident in the benefits.
I do worry that this may end up being a waste of money compared to a traditional gas heater or even a heat pump. My pool builder balked at the heat pump idea stating "our humidity is too low for it to be effective." When I looked at the trends for early spring and late fall the humidity was much higher than middle of the summer.
Anyway, on to what has me a little hesitant. I have determined that the best fit for us is the Heliocol panels and as I'm reading the installation manual, it very specifically says not to instal on a north facing roof. The pool is about 550sq/ft and the proposed solar is 550sq/ft.
Does anybody have have any experience with this?
Thanks in advance for any help, advise or comments you have.