Water – Hot water without hot water supply and electricity

hot-waterwater

I have a tap in a room where I only have a cold water supply. Also I don't have current electricity nearby. Is there any way to provide at least lukewarm water there?

Best Answer

Install a holding tank or a coil of supply line, hidden under the sink.

It wouldn't last long, it'd only be ambient temperature at best, and its recovery would probably be hours, but it would be above the incoming water temperature at least long enough to wash your hands without getting frostbite.