Eli5: How does a hotel always have hot water for every occupant?

Question

Eli5: How does a hotel always have hot water for every occupant?

In: 1975

Answer 1

Hotels I have worked in have recirculating pumps that basically constantly have flowing hot water in insulated pipes to be able to transport hot water to the room that is calling for it.

These pumps run almost continuously unless absolutely no one is using hot water. In a hotel, that would be a rare occasion.