Why do we recommend that you always have more than one cylinder?

We recommend keeping a back-up carbonating cylinder handy so that when one CO2 cylinder runs out, you simply swap the empty cylinder for a full one. That way, you'll keep enjoying fresh, fizzy drinks without interruption. You can exchange the empty carbonator via courier service or in a store near you. Click here to purchase a spare cylinder. Sparkle Pro-tip: Exchange 2 or more cylinders and you can save over 45% in shipping fees!