Why does my Crystal not make noise when carbonating?

Hooray, you noticed!SodaStream is constantly striving to improve the consumer experience.We've taken note of your feedback and in 2020 we've upgraded the Crystal Sparkling Water Maker with a new Quiet Valve.Now you can produce those bubbles without alerting the dog!

You may have a sparkling water maker that makes noise during carbonation.If so, don't worry, it's part of the standard carbonation process.