Viessmann One Base, ViCare, ViGuide & Vitoconnect Explained
Viessmann One Base is the digital platform used in many current-generation Viessmann products. It allows compatible heating, hot water, heat pump, ventilation and renewable energy products to work together as part of one connected home energy system.
For homeowners, the main benefit is simple: compatible Viessmann products can be monitored and controlled through the ViCare app. For installers, ViGuide provides commissioning, servicing and remote support tools.
This page explains the key parts of the system and how they work together.
What is Viessmann One Base?
Viessmann One Base is the technology platform built into many modern Viessmann appliances. It connects compatible products into one digital system, helping users manage heating, hot water and energy use more easily.
A One Base system may include:
- Vitodens boilers
- Vitocal heat pumps
- Vitovent ventilation systems
- ViCare controls and thermostats
- Solar PV, battery storage and future energy products where compatible
Compatibility depends on the product model, generation and firmware version. Please check the relevant product information or contact us if you are unsure.
Why is One Base useful?
- One connected system instead of several separate controls
- Remote control through the ViCare app
- Energy monitoring where supported
- System alerts and fault notifications
- Installer support through ViGuide where enabled
- Designed to support future home energy technologies
What is the ViCare App?
ViCare is the homeowner app used to control compatible Viessmann heating systems from a smartphone or tablet.
Depending on the appliance and system setup, ViCare can allow you to:
- Adjust heating temperatures
- Set heating time programmes
- Control hot water settings
- View system status
- Receive fault notifications
- Monitor energy use where supported
- Connect your system to your installer for remote support
Available functions depend on the Viessmann appliance, control unit, firmware version and connected accessories.
ViCare System Requirements
- A compatible Viessmann appliance
- Either an integrated communication module or Vitoconnect interface
- Wi-Fi in the property
- Internet access
- A smartphone or tablet using iOS or Android
What is ViGuide?
ViGuide is the digital tool used by professional installers to commission, service and monitor compatible Viessmann systems.
ViGuide can help installers with:
- Guided appliance commissioning
- Heating circuit and hot water settings
- Heating curve adjustments
- System status checks
- Fault history and clear text messages
- Remote monitoring where enabled by the system user
- Support during service and maintenance visits
For homeowners, this can make servicing easier and may help an installer identify issues before attending site.
ViGuide is intended for professional installer use. Homeowners would normally use the ViCare app.
What is Vitoconnect?
Vitoconnect is an internet interface used to connect certain Viessmann heating systems to the ViCare app.
It is commonly used with compatible older appliances that do not have an integrated communication module.
Vitoconnect connects to the appliance using the Viessmann Optolink connection and connects to the internet using Wi-Fi.
Vitoconnect is generally used for:
- Remote control through the ViCare app
- System status information
- Fault notifications
- Connection to compatible ViCare accessories
Important Note
Vitoconnect is not normally required for Viessmann appliances that already include an integrated communication module or are built on the Viessmann One Base platform.
Which System Do I Need?
| If you have... |
You may need... |
| A newer Viessmann appliance with integrated communication |
ViCare app |
| A modern One Base appliance |
ViCare app |
| An older compatible appliance with Optolink |
Vitoconnect and ViCare app |
| A professional installer commissioning or servicing systems |
ViGuide |
If you are unsure which product or accessory is suitable, please check your appliance model and serial number before ordering.
Useful Links
Need Assistance?
If you need help identifying a compatible Viessmann product, communication module, control or accessory, our customer service team will be happy to assist.
To help us provide the correct advice, please have your appliance model number and serial number available where possible.
Viessmann Direct Customer Services
Telephone: 0333 123 1233
Email: sales@viessmanndirect.co.uk
Our team can assist with:
- Product compatibility checks
- ViCare and Vitoconnect enquiries
- Heating controls and accessories
- Spare parts identification
- Product availability and ordering
- Technical documentation and manuals
Alternatively, you can use the search facility on our website to find genuine OEM Viessmann products, controls, accessories and spare parts.