No, Mitte Home requires a CO₂ Cylinder to be installed at all times for our proprietary priming to be possible. This is where the water is acidified with the help of CO₂ so that it can then absorb an optimal amount of minerals. We recommend Mitte Home Cylinders, available in our online store or through Smart Refills. Other CO₂ cylinders can be used with Mitte Home also. Full details of supported cylinders can be found in this article What CO₂ cylinders does Mitte Home support?.