It probably has nothing to do with the shower. It mainly depends on how long you bathe for and how much water you use. A normal bath is generally 60 L/person. If you choose a rain shower type, the water flow. is relatively important. Pay more attention to the water temperature in the solar panel. Follow the amount of water.
It can only be said that the water outlet will be blocked, because there is scale in the water, which easily stays near the water outlet, and it will easily become clogged over time . So it's only a matter of time. You can brush it with a fine-bristled toothbrush from time to time, maybe that's better. The model is a matter of personal preference. The market price is around 400+, so don't try to be cheap or it will break easily