This beverage supply device (1) is provided with: a cold water tank (20) which stores water (50); a carbonation tank (30) which adds carbon dioxide gas to water (50) supplied from the cold water tank (20) through a water supply path (24) to generate carbonated water (60), and stores the carbonated water (60); and a pipeline heater which is disposed in the water supply path (24).飲料供給裝置(1),是具備:將水(50)貯留的冷水槽桶(20)、及對於從冷水槽桶(20)透過水供給路(24)被供給的水(50)加入碳酸氣體而生成碳酸水(60)並將碳酸水(60)貯留的碳化槽桶(30)、及設在水供給路(24)的管路用加熱器(25)。