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

I worked at a hotel that had 1 water heater per 25 rooms and 1 circulation pump per 50 rooms. Take into account the public areas, housekeeping laundry, and restaurant/bar, we had maybe 17 water heaters plus circulating pumps strategically placed throughout the building to ensure hot water was available anywhere at anytime.