The water going into it is cold.
The water going into it is cold.
It doesn't have to be.
It doesn't have to be.
It is literally a cold-water pipe.
It is literally a cold-water pipe.
most commonly, yet. But you can pipe water that is already heated somehow in it and it will keep it heated.
most commonly, yet. But you can pipe water that is already heated somehow in it and it will keep it heated.
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