Solar water heating
We're looking at a "Mazdon Solar Array" for supply our domestic hot water needs. It's not cheap, but then we pay out over $400/ year for hot water now, and the system "should" pay for itself seven years (five for the smaller version which might suffice.)
Claims are that they perform even during the winter and on overcast days. Electric backup is part of the deal.
Does anyone have any experience with or comments about this or comparable systems?
We're in western Montana, about 47 degrees north.