All of our devices can be entirely customized with your logo/brand, both in terms of components and aesthetics, with an additional front panel based on customer requests. External Hot Carbonator HC300 1, 2ltr. - External Hot Carbonator HC300 1ltr. - External Hot Carbonator HC300 2ltr. The HC300 is an External Hot Carbonator, also known as a Hot Carbonating Unit, and it represents the ideal solution for producing sparkling water when paired with a water cooler. Designed to meet the needs of bars, di