Post-mix beverage dispenser

A lightweight, portable post-mix carbonated beverage dispenser unit for use in small offices or small-volume locations is described. Flavoured syrup is supplied to the unit from disposable sealed syrup packages SP which are plugged into a dispenser valving system. CO2 is supplied to the unit carbonator system CT in returnable containers 42 which also may be quickly plugged into a C02 valving system 44. A thermoelectric refrigeration system 72 may be provided to decrease noise and the number of moving parts or a mechanical freon system may be used. The unit construction may be modular for ease of repair. The cabinet is injection-molded from plastic. Water is supplied to the unit for mixing with the CO2 and syrup from a water reservoir WR which may be manually filled. The refrigeration system cools the water in the reservoir, as well as the syrup packages and carbonator tank.