What's the difference between exchange versus back-up carbonating cylinders?
Bubbles 101: Our carbonating cylinders are the heart of your Sparkling Water Maker. It perfectly fits your Sparkling Water Maker and contains colorless, odorless, incombustible CO2, used to help create the bubbles.
With a CO2 exchange, you return any empty SodaStream cylinder and just pay the price of the gas for a new cylinder. You can easily exchange your carbonating cylinder via home delivery or at a store near you.
A spare cylinder is there so you never run out of CO2. You pay for the license of the cylinder and the CO2. SodaStream recommends having at least 3 cylinders on hand, so you’ll always have bubbles and so you can exchange 2 at a time, taking advantage of the reduced shipping charge. Get your back-up CO2 cylinder here.