See real systems in operation right now. The traditional “flat plate” collectors, like those on the solar shed, are more affordable and are better suited for an attractive, integrated appearance. The modern, evacuated tube collectors perform better, especially in cold weather.
This solar water heating system is operating in Purcellville, VA. It uses two flat plate collectors. See it in operation and check the temperature graphs to see the last 24 hours of action.
This solar water heating system is operating in Round Hill, VA. It uses a 20-tube collector. See it in operation and check the temperature graphs for interesting insight.