The water itself is kept at an optimum temperature. One frustrating thing about water coolers is that they do not keep water as cold as a refrigerator (40°F). They typically only cool to 50°F. Our ice cooling technology keeps the water at a chilly 40°F, perfect for those hot summer days. The instant hot water system keeps its temperature in a narrow range, always steaming hot, so that tea is made properly. Many basic water coolers let the hot water cool down too much, which often ruins tea.