Abstract: A boiler assembly for a hot beverage dispensing machine is characterized by a baffle that separates a cold water refill chamber of the boiler from a water heating and dispensing chamber of the boiler in a manner that provides for non-turbulent flow of cold water from the water refill chamber into the water heating chamber without substantial mixing of the cold refill water with the already heated water and, thereby, without lowering the overall temperature of the already existing heated water.