Household solar water heater is installed, and there is no water supply, which may have an impact.

If it's a big brand solar water heater, it won't affect it. Because the vacuum tube of big brand solar water heater, the thickness of stainless steel used in water tank liner and the material of water tank insulation layer are all real materials.

For some inferior brand goods with inferior quality and hot water in small workshops, there will be problems such as discoloration of air-dried vacuum tubes, deformation of inner liners and shrinkage of insulation layers.

The reason for this is the following：

First, the vacuum tubes currently on the market are really resistant to air exposure, that is, the three executives of some big factories, while other tubes are very resistant to air exposure.

Third, without water supply, the temperature in the water tank can easily reach 100 degrees Celsius or even 300 degrees Celsius. Because the material of water tank liner is too thin, repeated large temperature difference will easily lead to deformation of inferior water tank liner.

Third, high temperature will also lead to shrinkage or denaturation of inferior thermal insulation materials, which will affect the thermal insulation effect.