Sorry. [Look. He doesn't know how much you know.] That's more- water pressure, and yeah, electricity is involved in a lot of it, but some setups don't use it. For hot water, though?

[...okay, you know what, this is what is going to convince Browning. Once and for all. He turns the water on to warm, tests it with his hand, then gestures for Ariel to do the same.]

Give it a try. It's safe.