A lot of people ask me if heating water with solar energy is effective. This is a demo of a small collector turning snow into steam. This demo collectors, 4 tubes are only 2 feet long and the total size is equilivant to just one 8 foot tube in a full size collector. Full size collector units usually have between 10 and 30, 8 foot long tubes. I have measured water temps has high as 195F coming out of this little collector. Full size collectors can provide enough heat to handle your domestic hot water use and they can be grouped together to heat your home through radiant floor systems.