It warms the water slowly and keeps it hot all the time.The stove has a pilot light that constantly burns gas.
because the water in the container has cooled that goes day after day even though the water has never been used That's because the water loses heat around it like having a kettle filled with water on the stove all the time.
But it will not lose less heat and the water will need to be reheated continuously.
In today's era when energy is expensive and more and more is a total waste of energy and money.
It puts an unnecessary burden on the environment and contributes to global warming and climate change.The water heater in the water tank is very inefficient.
Bacteria and germs prefer warm standing water and grow easily and quickly in that environment.The water is usually not hot enough to kill them.