BTW, they did mention solar water heating also stating, "Solar water-heating systems actually generate more power for the buck than solar electricity systems, as rooftop panels transfer the sun's heat to a water tank. Prices range from $3,500 to $5,500, and homeowners can save up to 85 percent on their hot-water costs. Payback period: three to five years."
They did not mention Trendsetter though. I don't know where they got the price from.