1. The price is high.
2. The volume is small, basically kept between 80-100 liters (the smallest for ordinary solar power is 160 liters - 58*1800, only 16) .
3. The temperature is low and the maximum temperature will not exceed 75℃. In winter, it is basically kept at 30℃ - 40℃ without auxiliary electric heating.
4. It consumes electricity, because the wall mounted solar panel does not heat in winter and completely requires electrical assistance, so if you want to use hot water , you need to add an electric heater.
5. Because it works under pressure, it requires cold water and hot water before it can be used. Once the cold water pressure is low and there is no cold water, it is used. Cannot be used.