ViCare: Vitocal 252-A current power consumption and heat production are available via API but not exposed as entities

[metalcreep]

Integration name

Viessmann ViCare

Link to integration documentation on our website

https://www.home-assistant.io/integrations/vicare/

Describe the enhancement

I am using the built-in Viessmann ViCare integration with a Viessmann Vitocal 252-A.

The Viessmann API response for my device contains the following live values:

• heating.power.consumption.current
• heating.heat.production.current

Both features are enabled, ready and connected and return numeric values in kW.

However, Home Assistant Core 2026.9.0 does not expose either value as an entity.

I checked the ViCare entities in Home Assistant:

• Searching for current only shows Inverter current.
• Searching for power shows Inverter power, but there is no entity for the system-level current power consumption.
• Searching for production does not show an entity for current heat production.

The existing Inverter power entity is a different value and should not be considered equivalent to:

• heating.power.consumption.current

The API exposes inverter power separately from the system-level current electrical power consumption.

Expected behavior

The ViCare integration should expose the existing API features

• heating.power.consumption.current
• heating.heat.production.current

as Home Assistant sensor entities.

For example:

• Current power consumption
• Current heat production

Both values are reported by the Viessmann API in kW.

Actual behavior

No Home Assistant entities are created for these two API features.

The related live entities currently exposed include:

• Inverter current
• Inverter power

but not:

• Current system electrical power consumption
• Current heat production

Example API data

For current electrical power consumption:

{
"feature": "heating.power.consumption.current",
"isEnabled": true,
"isReady": true,
"properties": {
"value": {
"type": "number",
"value": 0,
"unit": "kilowatt"
},
"status": {
"type": "string",
"value": "connected"
}
}
}

For current heat production:

{
"feature": "heating.heat.production.current",
"isEnabled": true,
"isReady": true,
"properties": {
"value": {
"type": "number",
"value": 0,
"unit": "kilowatt"
},
"status": {
"type": "string",
"value": "connected"
}
}
}

The example values above were captured while the compressor was idle, therefore 0 kW is expected.

Environment
Home Assistant Core: 2026.9.0
Integration: Viessmann ViCare
Device: Viessmann Vitocal 252-A
Product family: VC252
Viessmann IoT API: v2

On this Vitocal 252-A the relevant features are available at system level:

heating.power.consumption.current
heating.heat.production.current

The existing inverter power value is exposed separately by the API and represents a different data point.

I can provide an anonymized feature dump and test a proposed fix if needed.

Use cases

Having both values available as entities would also make it possible to calculate a momentary COP:

• current heat production / current electrical power consumption

This is different from the existing seasonal performance factor, which represents efficiency over an accumulated period rather than the current operating point.

Anything else?

No response

[github-actions[bot]]

🏷️ I've automatically added the integration: vicare label to help categorize this feature request.