Facility and method for producing a carbonated beverage

Provided is a facility for manufacturing a carbonated beverage that can reduce a manufacturing cost of the carbonated beverage and reduce an environmental load through reduction of a use amount of carbon dioxide. A facility for producing a carbonic acid beverage includes a brewer that generates a mixed liquid of raw material water and raw material syrup and includes a mixed liquid tank that stores the generated mixed liquid, a carbon dioxide gas dissolving unit that generates a product liquid by dissolving carbon dioxide in the mixed liquid, A carbonator including a product liquid tank that is in a carbon dioxide atmosphere, and a gas feeding path that always supplies the carbon dioxide gas discharged from the product liquid tank toward the mixed liquid tank during operation of the carbonator. Figure 1