Between 45 degrees and 60 degrees.
The heating fluid of the solar water heater is mainly used to transfer heat, helping the solar water heater convert the thermal energy of the sun into electrical energy, thereby heating the water . The water temperature of solar water heaters is generally between 45 degrees and 60 degrees. If the water temperature needs to reach a higher temperature, such as 100 degrees, additional heating equipment or methods are required. To ensure safe use, the water temperature of solar water heaters should not exceed 80 degrees.