What does the Mitte Home device actually do?

Mitte Home prepares tap water in three steps: it filters, mineralizes, and – if desired – carbonates it. You can dispense still, medium, or sparkling water directly from the device.

Do I really need a CO₂ cylinder for still water?

Yes. The Mitte CO₂ cylinder is part of the device’s internal water-processing system. According to the user manual, the device requires a CO₂ cylinder to operate correctly, even when dispensing still water.

Which CO₂ cylinders do I need for Mitte Home?

Mitte Home uses 425 g CO₂ screw-type cylinders (no Quick-Connect). We strongly recommend using official Mitte CO₂ cylinders, as the device’s sealing and dosing system is designed specifically for them. While some screw cylinders may fit mechanically, third-party cylinders can cause malfunctions and are not covered by warranty.

How long does one CO₂ cylinder last?

Depending on your carbonation level, one 425 g cylinder typically lasts for 45–90 liters of water (approx. 50 - 100 bottles of 0.6 L).

How do I know when the CO₂ cylinder is empty?

The LED ring will begin flashing rapidly in orange, and the Mitte App will notify you that the cylinder is empty. The device will stop dispensing water until a new cylinder is installed.

How do I replace the Mitte CO₂ cylinder?

  • Open the left side panel of the device.

  • Unscrew the empty cylinder counterclockwise (a small release of gas can be normal).

  • Remove the protective cap from the new cylinder.

  • Insert it vertically and screw it in clockwise until hand-tight.

  • What is the Mitte Exchange Box?

    The Mitte exchange box is the reusable exchange system for your Mitte CO₂ cylinders: You receive several filled 425g Mitte cylinders and send back the same number of empty cylinders of the same type in return – free of shipping costs. 

    Provided that the number of cylinders owned is the same.

    How does the Exchange Box work — step by step?

  • Collect your empty cylinders
    You need the same type of empty Mitte-compatible 425g cylinders.

  • Order the appropriate Exchange Box
    Available in 2-pack or 4-pack sizes.

  • Receive your full cylinders
    Delivery usually takes 1–3 working days and shipping is included.

  • Send back your empties
    Place your empty cylinders in the same box, attach the included return label, and drop it off within 14 days.

  • What if I do not return the empties?
    If empty cylinders are missing, the delivered cylinders will be charged as standard purchase cylinders.


  • Do I need official Mitte cylinders to use the Exchange Box?

    No. For the Mitte exchange box, you must have the same number of empty 425g CO2 cylinders and return them. Other valve types can also be returned as empties. The system is full-for-empty, no deposit, but an exchange-based refill service.

    What is the difference between Purchase Cylinders and the Exchange Box?

  • Purchase Cylinders:
    You buy the cylinders and keep them permanently. They become your property and can later be exchanged via the Exchange Box.

  • Exchange Box:
    You keep your cylinders long-term but only pay for the CO₂ refills and the service. Full-for-empty, shipping included — no deposit system.

  • Purchase Cylinders:
    You buy the cylinders and keep them permanently. They become your property and can later be exchanged via the Exchange Box.

  • Exchange Box:
    You keep your cylinders long-term but only pay for the CO₂ refills and the service. Full-for-empty, shipping included — no deposit system.

  • Can I use standard 425 g CO₂ cylinders in my Mitte Home?

    Mitte Home uses a standard 425 g screw-type connection, so some third-party cylinders may physically fit. However, only official Mitte CO₂ cylinders are recommended and supported.
    Using non-Mitte cylinders may void your warranty.

    Which cartridges does Mitte offer, and how do they differ?

  • Light Cartridge: decalcifies your drinking water, soft taste. Perfect for coffee and tea enjoyment.

  • Balance Cartridge: A balanced mineral profile using calcite and magnesite

  • Active / Restore: Stronger mineralization and a more intense taste profile.


  • more information can found here

  • How long does a cartridge last?

    Cartridge lifetime depends on the specific model, but many provide up to 300 bottles.
    Additionally, once opened, a cartridge should be replaced after 12 months, even if its capacity has not been fully used.

    Do I need the App to use the device?

    No. You can use all essential functions — dispensing water, selecting carbonation levels, replacing cartridges or CO₂ — without the app.
    The app adds convenience:

    • Cartridge and CO₂ status

    • Notifications when supplies are running low

    • Easy reordering

    • Smart Refills / Smart Replenishment

    What are Smart Refills / Smart Replenishment?

    Smart Replenishment is an optional service that monitors your actual usage and reminds you when cartridges or CO₂ cylinders are running low. With your confirmation, new supplies can be shipped automatically.

    How should I store CO₂ cylinders safely?

  • Store upright in a cool, dry place

  • Keep away from heat and direct sunlight

  • Do not store in small unventilated rooms

  • Keep cylinders out of reach of children

  • What should I do with empty or old cylinders?

  • Use the Exchange Box to return and refill them

  • Do not open, puncture, or dispose of cylinders yourself

  • If a cylinder is permanently out of use, return it through official recycling channels — not household waste

  • Are there shipping costs for Mitte cylinders or the Exchange Box?

    No. Mitte Purchase Cylinders and all Exchange Boxes include free shipping.

    How fast is the delivery?

    Most Mitte orders are ready for immediate dispatch and arrive within 1–3 working days.