This innovative system offers a tempting variety of chilled coffee specialties while enhancing energy efficiency. Initially, hot coffee is prepared within the brewing unit of the WMF 5000 S+. Subsequently, before reaching the spout, it traverses a counterflow heat exchanger. Simultaneously, fresh cold water for the next cup travels to the boiler in the opposite direction. As they intersect in the counterflow heat exchanger, the coffee cools while the water warms. Consequently, the water requires less heating in the boiler, and the coffee emerges already cooled, eliminating the need for additional refrigeration. This not only conserves energy but also ensures your chilled coffee beverages maintain their superb appearance and flavor, with more ice or ice cream remaining intact.