With many of our products, such as heat pumps and boilers, already connected, having clear access and control over your data opens valuable opportunities. The EU Data Act supports this by giving you defined rights to access, use, and benefit from the data your devices and our connected services generate.
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Your data, your rights: How we fulfill the EU Data Act
Please note, the information on this webpage and the forms accessible here will be valid and operational as of September 12th, 2025. Requests filed before this date cannot be processed.
What is product data, what are connected services and what is connected services data?
Product data is the information your Vaillant appliance generates while it's operating — things like temperature settings or energy usage and that is designed to be retrievable; be it via internet, a remote or a physical connection to your appliance.
Connected services are all digital services, particularly Apps, that are connected with your appliance in a matter that one or more of your appliance’s functions couldn’t be used without it. Connected services data is all data generated from the way you use a connected service.
Who at Vaillant will handle the data received from an appliance or app? Whom can I contact?
Vaillant Group GmbH, Berghauser Str. 40, 42859 Remscheid, Germany acts as Data Holder within the meaning of the EU Data-Act. For any enquiries regarding product- and related services Data in connection with the EU Data-Act, you can contact us at ido@vaillant-group.com at any time.
What kinds of product data can an appliance or app transmit, which kinds of product data will we receive from an appliance or app?
Our appliances are capable of generating the following types of data and transmitting them in the following frequency.
Data-Type | Transmission Interval | Data-Type examples | Data-Size |
|---|---|---|---|
| System Control Data | May vary based on data point between on change to once a day | Desired water-temperature settings, actual temperature of the water inside of the appliance, target room-temperature | Avg. 1 KB per one data package |
| Ambisense Data | May vary based on data point between on change to once a day | Room temperature, humidity | Avg. 1 KB per one data package |
| Operational Data | May vary based on data point between on change to once a day | Water-pressure, flow rate, device status, sensor information | Avg. 1 KB per one data package |
| Energy Management Informations | on change (by user) | Status changes of the energy management functionalities, e.g., as triggered by the appliance’s EEBUS connection | Avg. 1 KB per one data package |
| Topology Data | on change | Connected components, their serial numbers and soft-/firmware-versions | Avg. 1 KB per one data package |
| Diagnostic Trouble Codes | ~ 15min | Avg. 1 KB per one data package | |
| Online Status | on change | Of gateway or device (depending on appliance type) | Avg. 1 KB per one data package |
The data will be transmitted in JSON format. The file size is below 10kB.
Caveat: Especially contained in the heating appliances can be data that qualifies as trade secret. This data is subject to specific additional safeguards and handling requirements. These requirements are described in the Terms and Conditions applicable to each individual data access request.
Storage duration of this data
The aforementioned data is solely stored in its respective current state within the appliance. The data we receive from an appliance or an app will, save for those cases where it must be handled differently due to reasons of Data-Protection laws, especially GDPR, be stored for a maximum duration of two years within our systems.
How to request your data and how to make it accessible to third parties
We’re committed to making your data easy to access — in line with the EU Data Act. If you’d like to request product or related service data from an appliance or an app, the process is simple:
1. Fill out the data request form
Provide us with the basic details about your device and the type of data you’re looking for as per our Data Request form. If you want us to provide your Data Act relevant data to a third party, you can also state that here. If you are a third-party requesting data on a user’s behalf, you will also have to indicate that in our Data Access Request form.
By submitting a Data Access Request you accept the Terms and Conditions applicable to your request, as indicated in the Data Access Request form. They form an integral part of your offer to enter into a legally binding contract.
Contracts on data-access have a one-year period. Means of termination are described in the Terms and Conditions applicable to the specific contract.
2. We’ll review your request
Our team will verify your information and ensure the data can be provided in a secure and compliant way.
3. Receive your data
Once your information and data-access request are verified we will accept your offer to enter into a contract with us and prepare the provision of the requested data. You’ll receive the relevant data in a structured, commonly used format along with further instructions on how to download it from our systems.
How will Vaillant use the data from the appliance or the app?
We will use the data received from the Appliance and/or the App to provide the IoT functionalities of our appliances to their end-users. Furthermore, the data is used for product optimization. If a user so desires, the data is used for remote optimization and remote maintenance.
Your right to lodge complaints
Under EU Data Act you are entitled to file complaints with the competent authority, if you feel that we have infringed your rights under EU Data Act.