Viessmann ViCare
vicare
The Viessmann ViCare integration lets you control Viessmann devices via the Viessmann ViCare (REST) API. Most recent network-connected Viessmann heating devices (e.g., gas boilers) should be supported.
In Apple Home through HomeKit Bridge
What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.
| Entity | Shows up as | Note |
|---|---|---|
switch | Switch or outlet | |
climate | Thermostat | |
fan | Fan | |
binary_sensor | Sensor (contact) | |
sensor | Sensor (PM10, PM2.5, air quality, humidity, temperature) | |
water_heater | Water heater (as a thermostat) | |
button | Button (as a switch) | |
select | Mode picker (as switches) |
What people report
Cloud-polled Viessmann ViCare supports heating, ventilation and room sensors; Vitodens 333 and VitoCharge VX3 users hit missing-datapoint failures after cloud changes. TRV support was not merged.
- Works4
- Not working1
- Requested1
- Won’t be supported1
| Device | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| Viessmann ventilation devices (ViAir) | Works Cloud | Ventilation support merged, standby quick mode addedSaved copyProposed change This adds the support for ventilation devices into the ViCare integration. ## Type of change <!-- What type of change does your PR introduce to Home Assistant? Excerpt saved from GitHub on 2026-10-23. | PR #114175 · 2024-03 | |
| Viessmann ViCare room sensors | Works Cloud | Room sensor support mergedSaved copyProposed change Add support for ViCare room sensors. ## Type of change <!-- What type of change does your PR introduce to Home Assistant? NOTE: Please, check only 1! box! If your PR requires multiple boxes to be checked, you'll most likely need to split it into multiple PR Excerpt saved from GitHub on 2026-10-23. | PR #125243 · 2024-09 | |
| Viessmann Vitocal 252-A heat pump | Works Cloud | ViCare integration uses Viessmann cloud API; shows system stateSaved copyI have a viessman vitocal 252-A and use the Vicare integration in HA that access the heat pump via viessman cloud api. The integration shows the state of the system and that is fine as the system is running almost without intervention from users. I live on faroe islands where there is push to change to heating pumps in order to reduce co2 emmission. There are some incentives that reduce the price for a heat pump and reduced price for the electricity. There is a lot of money to save on the heating bill chaning to heat pumps. I have saved about 65% on the heating bill compared to the old oil … Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23. | Reddit comment · 2024-05 | |
| Viessmann Vitodens 333 | Works Cloud | Setup failed on missing device.serial datapoint; issue closed as completedSaved copyAnd I am using a Viessmann Vitoconnect 100, Typ OPTO1 for the Wifi/Web connection From: Michel Gambier Sent: Saturday, September 7, 2024 5:13 PM To: home-assistant/core *@*.*> Subject: RE: [home-assistant/core] Vicare integration no longer works after update to latest versions of Home Assistant and Home Assistant OS (Issue #125464) Sure it's a Vitodens 333. Everything was working fine so far and I can still access the furnace with the ViCare app. From: Christopher Fenner *@*.@*.*>> Sent: Saturday, September 7, 2024 5:05 PM To: home-assistant/core *@*.@*.*>> Cc: Michel Gambier *@*.@*.*>>; … Excerpt saved from GitHub on 2026-10-23. | Issue #125464 · 2024-09 | |
| Viessmann VitoCharge VX3 8.0 with E3_TCU10 gateway | Not working Cloud | Feature-not-supported errors for PV/battery system after upgradeSaved copyHello Christopher Sorry for late answer I was on holidays I have the following Components VitoCharge VX3 8.0 A Communication Module / Gateway is integrated. It is a ElectricalEnergySystem (Photovoltaic with Battery). It worked good in the past after an upgrade to a new HA Version it stopped working. Attached you will find the log regarding ViCare How do I set the devece type in the config to auto. From: Christopher Fenner *@*.*> Sent: Monday, September 23, 2024 21:29 To: home-assistant/core *@*.*> Cc: asun777 *@*.*>; Mention *@*.*> Subject: Re: [home-assistant/core] Vicare Integration: … Excerpt saved from GitHub on 2026-10-23. | Issue #126547 · 2024-09 | |
| Viessmann TRV | Requested | TRV support PR closed unmergedSaved copyProposed change Add support for TRVs. ## Type of change - [ ] Dependency upgrade - [ ] Bugfix (non-breaking change which fixes an issue) - [ ] New integration (thank you!) - [x] New feature (which adds functionality to an existing integration) - [ ] Deprecation (br Excerpt saved from GitHub on 2026-10-23. | PR #137215 · 2025-02 | |
| Viessmann Heatbox3 (VitoConnect gateway) | Won’t be supported | Only exposes WiFi signal; added to unsupported listSaved copyProposed change Add Heatbox3 (VitoConnect gateway) to the unsupported devices list. Heatbox3 only exposes a single WiFi signal strength entity and no useful climate data. Including it increases the API cache duration unnecessarily (the cache scales linearly with device count at 60s per device), c Excerpt saved from GitHub on 2026-10-23. | PR #168067 · 2026-04 |
Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.
How it connects
Cloud polling
Goes through the maker’s cloud, asking it for updates every so often. Needs the internet and an account.
Found automatically over
- DHCP
Details
| Installs (analytics) | 6,422 (0.91%) |
|---|---|
| Added in | Home Assistant 0.99 |
| Set up in the UI | Yes |
| Maintainers | @CFenner, @lackas |
In ReReHome
Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.
Bridges get their own settings page listing the accessories behind them.
