Disadvantages
1. High price and high installation cost The current price of an ordinary 100 liter ranges from about 4,000 to 5,000 yuan.
2. The water tank is relatively small. If used by one person, it can only be heated by solar energy. be heated by electricity. The water tank is 120 liters.
3. Regional restrictions are relatively strong. Generally, they are more practical in the south but basically useless in the north.
4. If the weather is too cold, antifreeze must be replenished or replaced regularly, increasing after-sales costs.
5. The installation is complicated, but it is usually installed by workers.
6. The functional efficiency of solar hot water is not very high.