Frequently Asked Questions

mitte Home filters tap water, adds selected minerals depending on the installed cartridge, and dispenses still or sparkling water.

Yes. The mitte Home starter kit is available as a one-off purchase. A purchase does not include automatic cartridge deliveries. See current offers in the mitte shop.

No. A tested and refurbished mitte Home device is provided for use under the mitte water subscription. For a one-off purchase, the product listing specifies the condition of the device.

Yes. A suitable CO₂ cylinder must be installed for the system to work, even when you dispense still water. The cylinder is part of the device’s internal operating system.

Place the device on a stable surface, then install the water tank, a suitable CO₂ cylinder and a mitte cartridge as described in the manual. A new cartridge requires an initial activation or flushing cycle; discard the water dispensed during this process. Follow the supplied user instructions.

After extended inactivity, we recommend installing a new cartridge and discarding water from the first two or three dispensing cycles. Follow the hygiene instructions in the manual. If the device leaks, smells unusual or does not function correctly, stop using it and contact support.

Selected accessories and spare parts, including water tanks, drip trays and protective sleeves, are offered in the mitte shop. Repairs inside the device or its pressurised system must not be carried out by customers. Internal seals are not supplied for self-installation.

Do not drink the affected water. Check that the tank and bottle are clean and that the cartridge is suitable for use. If the issue continues, email support@mitte.co with the cartridge type and a description of the problem.

There are four variants: Balance for a balanced mineral profile, Light for softer water, Active with a different profile involving sodium and potassium, and Restore with an emphasis on magnesium. The variants are available in the mitte shop.

Balance is a versatile everyday option. Light reduces water hardness and is particularly suitable if you prefer water for coffee or tea. Active and Restore provide different mineral profiles. Refer to the individual cartridge descriptions for taste and mineral details.

This depends on the cartridge. Current product information indicates around 250–260 litres for Balance and approximately 210 litres for Light, Active and Restore. Actual capacity and device readouts may vary with the cartridge and firmware.

According to our current service guidance, unopened and unused mitte filter cartridges do not have a fixed best-before date. The production date does not determine the recommended service period. Store them dry and appropriately. After first use, we recommend replacement within one year, or sooner if capacity is reached.

We recommend replacing it no later than one year after its first use, regardless of the production date. Replace it sooner if its stated capacity has been exhausted. Older information about an automatic 180-day lockout no longer applies to current firmware.

Check once that the cartridge is fitted correctly in accordance with the manual. If it remains unrecognised, the NFC chip may be faulty. Please email support@mitte.co with a photo of the cartridge and, where possible, the batch marking. We will arrange a replacement in this case.

Older firmware could display time-based warnings. The earlier 180-day lockout logic has since changed. Check whether the app offers a regular firmware update. If the device still does not recognise the cartridge or prevents dispensing, contact support.

Insert it as shown in the manual, fill the tank at least to the minimum level and start the specified activation cycle. Discard the water from that initial cycle.

Please contact us before returning anything. We can check whether an unused cartridge may be exchanged for another available type, for example Balance. If a cartridge is faulty, we will clarify which item should be exchanged.

Used cartridges do not need to be returned to us. According to our current service guidance, they can be placed in residual household waste, subject to any different local disposal rules.

The manual advises draining, closing and refrigerating an activated cartridge if it will not be used for more than two days. After a prolonged break, we recommend a new cartridge and a fresh flushing cycle.

Use bottles designed for mitte Home or expressly confirmed as compatible. Suitable glass and PET bottles are available. Only use third-party bottles if compatibility with insertion and carbonation has been explicitly confirmed.

The available 1-litre bottles have a maximum fill mark of approximately 860 ml for carbonation. Do not exceed this mark.

We recommend a maximum of two years from first use for mitte PET bottles. The “01/2025” mark on some older bottles has led to misunderstandings; our use recommendation is based on when the bottle was first put into service. Replace it after two years at the latest. Never carbonate using a bottle with cracks, distortion or other visible damage, even before then. If the first-use date is unknown, contact support@mitte.co.

Yes. The designated neoprene protective sleeve must be used with the mitte glass bottle during carbonation. Do not use damaged glass bottles.

Always follow the care markings on the particular bottle and its accompanying manual. Older manual editions contain differing instructions, so dishwasher suitability cannot be confirmed for every bottle and batch. When in doubt, wash by hand.

No. Do not pressurise a bottle that shows cracks, deformation or other visible damage. Replace it with a suitable undamaged bottle.

mitte Home requires a suitable 425 g screw-in CO₂ cylinder with a flat plate valve (Tellerventil). Not every threaded cylinder is compatible; other valve designs can damage the device seal. Quick-Connect cylinders with a click fitting are not compatible. Use only cylinders expressly confirmed as suitable.

Compatibility depends on the valve design, not simply the brand. The device is designed for suitable 425 g screw-in cylinders with a flat plate valve (Tellerventil). Other valve types may damage the seal and must not be used. If you are unsure about your cylinder, contact us before installation. Statutory rights relating to defects are not automatically lost because a third-party product is used; damage caused by an unsuitable cylinder must be assessed separately.

Consumption depends mainly on the carbonation level. Earlier mitte guidance suggests roughly 45–90 litres per cylinder as a broad indication. Your actual yield may differ.

Depending on device and software status, mitte Home may indicate an exhausted cylinder or stop dispensing. If no water comes out, also check that the cylinder, tank and cartridge are correctly fitted before assuming it is empty. Contact support if the problem persists.

Open the designated side panel and carefully unscrew the empty cylinder anticlockwise. Insert only a suitable 425 g screw-in CO₂ cylinder with a flat plate valve (Tellerventil), tightening it by hand in line with the manual. Other valve types may damage the seal. If hissing persists or you notice damaged threads or a leak, stop using the device and contact support.

The exchange box supplies filled 425 g CO₂ cylinders in exchange for the agreed same number of eligible empty cylinders. Shipping and a return label are included in offers that specifically state this.

Order an appropriate pack size. Once it arrives, place the corresponding number of eligible empty cylinders in the specified packaging and return them using the supplied documents within 14 days. Do not mix different pack sizes in one return.

Not necessarily. Eligible empty 425 g cylinders from other brands may be accepted, depending on the exchange-box offer. The specific product terms determine which valve types are accepted. Do not include Quick-Connect cylinders unless their acceptance is expressly confirmed.

The exchange requires the agreed quantity of empty cylinders. If some are missing, the difference may be charged under the terms of your exchange-box offer. Please contact support promptly if you cannot return the full quantity.

No. The core functions of mitte Home can be used without the app. The app adds device information, notifications, consumption tracking and convenient ordering functions.

There is no separate charge just for using the mitte app. Charges apply only to separately purchased products or agreed services.

Follow the steps in the mitte app and make sure Bluetooth and any required Wi-Fi permissions are enabled on your smartphone. Connection problems can depend on the phone, network configuration or firmware. If setup fails, tell support your phone model, operating system and exact error message.

When an update is offered for your device, follow the instructions in the mitte app. Do not interrupt an update in progress. Contact support if the feature cannot be accessed or the device stops working correctly after an update.

Check only parts accessible from outside: Is the water tank filled and seated correctly? Are the cartridge and CO₂ cylinder installed properly? Is there an error message? Do not open the unit or attempt repairs to the pressurised or internal water system. If these checks do not help, contact support.

Stop using the device. If the plug is safely accessible, disconnect power without touching water or damaged components. Do not perform further tests if there is smoke, sparking, excessive heat or damage to pressurised parts. Contact support.

Note which indicators light up or flash, and when. A photo or short video helps. Our team will assess the issue using the device model and firmware information rather than assuming a diagnosis from colour alone.

Smart Refills support convenient reordering of cartridges and CO₂ cylinders. Whether a new order is triggered automatically depends on the features you explicitly activate and the terms displayed in the app.

For items in stock, the shop commonly indicates delivery in around two to three working days. The delivery estimate shown on the product page and at checkout applies. Support can help if a shipment is delayed.

That depends on the item. Shipping is included for certain exchange boxes and other marked offers. Any charge will be displayed before you submit the order.

Online orders are subject to the applicable statutory rights and withdrawal information. Please contact us before shipping a return, especially if it contains CO₂ cylinders, so transport can be organised safely.

Email support@mitte.co or call +49 (0) 7665 9689746. For complaints, include the order number, product details and a description of the issue.

The starter kit includes a technically tested, refurbished mitte Home device provided on loan, a mitte Balance cartridge, a CO₂ loan cylinder and the drinking bottles included with the relevant plan. Further cartridge deliveries follow your selected interval.

The introductory price for the first month of use is €9.99 including VAT. From the second month, the regular monthly price displayed when you sign up applies. The introductory offer is valid where it is shown for your order.

Under standard plans, delivery takes place every six months for S, every three months for M, every two months for L, and monthly for Business. Your agreed checkout terms determine the services.

It begins when you actually receive the starter kit and runs for twelve months in total. The first 30 days of the trial are already included; another twelve months are not added after the trial.

During the first 30 calendar days after the starter kit arrives, you may end the subscription early under the voluntary trial terms. The initial €9.99 is generally not refunded when cancellation relies solely on this voluntary trial provision. Your statutory withdrawal rights remain unaffected.

Statutory withdrawal is an independent consumer right with its own refund rules. The voluntary 30-day trial offers an additional contractual way to end the subscription. The consequences depend on which right is exercised and the applicable contract and withdrawal information.

The first payment is made at the time of ordering and credited to the first month of use. Subsequent monthly payments follow the agreed schedule. Under the newer subscription model, the second payment is generally based on when you receive the starter kit. Your contract and billing documents state the dates applying to you.

You can submit ordinary notice at any time. After the voluntary trial has ended, termination generally takes effect at the end of the twelve-month minimum term. Statutory special termination rights remain unaffected.

Unless cancelled, the subscription continues for an indefinite period. You can then terminate it with no more than one month’s notice. A new twelve-month minimum term does not begin automatically.

You can use the cancellation function on mitte.co without signing in, or email support@mitte.co. Account-based subscription management is also available. We confirm receipt and provide the intended contract end date.

Once the subscription has ended, return the refurbished mitte Home loan device and its CO₂ loan cylinder. Drinking bottles are generally not loan items. Follow the return instructions we provide.

We cover the cost of properly returning the loan device and CO₂ cylinder and provide a suitable label and transport instructions. Follow the special shipping requirements for the cylinder. Return is generally required within 14 days after the contract ends, unless mandatory law requires otherwise.

Please contact us early if you cannot return the device or cylinder. Both remain the provider’s property. Failure to meet the return obligation can result in statutory claims for return and, where applicable, compensation. We do not quote a fixed fee here.

You can agree to an upgrade to an available higher-tier plan at any time without extending the original twelve-month minimum term. Downgrades within the same ongoing subscription are not offered.