Hot water urns and automatic tea brewers — countertop and under-counter boilers that hold water at brewing temperature so tea, coffee and hot chocolate pour on demand through service.
An urn holds water at temperature for pouring; a tea brewer steeps and dispenses ready tea. Some units do both.
Size it by cups per hour rather than tank volume alone — refill speed is what fails at peak. Tell us your covers and we'll size it.
A hot beverage dispenser holds and pours several drinks from separate tanks; a plain water boiler feeds them all from one supply.