The solar water heaters are becoming common in our daily life, how to clean the solar water heater is the matter what we must consider now. After long time using of solar water heater, you will find the flow of cold water is normal, while the yield of hot water is small. This problem is mainly caused by the scale in your solar water heater. And this is the good time for you to clean the solar water heater. If you have no idea about cleaning the main components of solar water heaters, you can view this passage as a reference.