Hi everyone 
I’m excited to share my Homey app for Luxtronik-based heat pumps. If you own a heat pump from Alpha Innotec, Novelan, Buderus, Roth, Elco, Nibe, Wolf Heiztechnik or CTA — and it has a Luxtronik 2.0 / 2.1 controller — this app is for you.
What is this app?
The Luxtronik Heat Pump Manager connects your heat pump directly to Homey via the local TCP interface (port 8889). No cloud, no third-party services — everything runs locally on your network.
Install from the Homey App Store
What can it do?
Read all sensor values
The app reads all values exposed by the Luxtronik controller:
-
Heat Pump State — Heating · Hot Water · Defrost · Standby · EVU Lock · Cooling · External · Off
-
Heating Status — detailed extended state string from the controller (e.g. “Screed Program Level 2 – 35°C”)
-
Hot Water Status — Blocked · Heating · Temp. OK · Off
-
Temperatures — Outdoor (current + 24h average) · Flow · Return (actual + target) · Hot gas · Hot water (actual + target) · Heat source in/out · Suction air · Room temp (with RBE display)
-
Energy values — Heating / Hot Water / Total (kWh)
-
Operating hours — Compressor / Heating / Hot Water
-
Volume flow — l/h
-
Error alarm — Yes/No
-
Last poll time — local time of last successful connection (24h format)
-
Firmware version
Control your heat pump
All controls write directly to the Luxtronik controller:
-
Hot Water Thermostat — set target temperature 30–65 °C, view current hot water temp
-
Heating Thermostat — set correction value −5 to +5 °C, view current flow temperature
-
Hot Water Mode — Automatic · Auxiliary · Party · Holidays · Off
-
Heating Mode — Automatic · Auxiliary · Party · Holidays · Off
Special functions
Hot Water Boost (Auxiliary Heating)
Forces immediate hot water heating using the second heat source, ignoring the time schedule:
-
Sets hot water mode to Auxiliary
-
Auto-stops when target temperature is reached
-
Auto-stops after configurable maximum duration (default: 60 min)
-
Resets to Automatic afterwards
-
Fires Flow trigger “Hot Water Boost ended”
Hot Water Boost (Party)
Same behaviour, but uses Party mode on the controller.
Thermal Disinfection
Enables continuous disinfection mode (parameter 27) for legionella protection:
-
Auto-stops when hot water reaches configurable target temperature (default: 65 °C)
-
Fires Flow trigger “Thermal Disinfection ended”
-
Note: Requires a second heat source (ZWE) enabled for hot water
Connection Watchdog
-
Poll timeout: No response → device immediately marked unavailable
-
Watchdog timer: Checks every minute if last successful poll was too long ago (threshold: 3× poll interval)
-
Device automatically becomes available again when connection is restored
Flow Cards
12 Triggers
| Trigger | Description |
|---|---|
| Heating mode changed | Token: new mode |
| Hot water mode changed | Token: new mode |
| Heat pump state changed | Token: new state |
| Error occurred | Token: error message |
| Error cleared | When error disappears |
| Hot Water Boost (Auxiliary) ended | On auto-stop |
| Hot Water Boost (Party) ended | On auto-stop |
| Thermal Disinfection ended | On auto-stop |
| Device became unavailable | Watchdog triggered |
| Device became available again | Connection restored |
| Outdoor temperature dropped below … °C | Configurable threshold |
| Outdoor temperature rose above … °C | Configurable threshold |
13 Conditions
Heating/hot water mode · Heat pump state · Heating status (free text) · Hot water status (dropdown) · Hot water temperature above/below · Outdoor temperature above/below · Thermal Disinfection active · Hot Water Boost (Auxiliary/Party) active · Device available
11 Actions
Set heating/hot water mode · Set heating correction · Set hot water target temperature (absolute or relative offset) · Start/Stop Hot Water Boost (Auxiliary) · Start/Stop Hot Water Boost (Party) · Enable/Disable Thermal Disinfection
Setup
Requirements:
-
Luxtronik 2.0 / 2.1 controller reachable on your local network
-
Static IP address (or DHCP reservation) recommended
-
Port 8889 or 8888 (TCP) must be reachable
Installation:
-
Install the app from the Homey App Store
-
Add device: Devices → + → Luxtronik Heat Pump Manager
-
Enter IP address and port (default: 8889)
-
Done — all values and controls are immediately available
Device settings:
| Setting | Default | Description |
|---|---|---|
| IP Address | — | Luxtronik controller IP |
| Port | 8889 | TCP port |
| Poll interval | 60 s | How often values are read |
| Boost duration | 60 min | Max duration for both boost modes |
| Disinfection target temp. | 65 °C | Auto-stop temperature for thermal disinfection (60–70 °C) |
Compatible manufacturers
| Manufacturer | Example models |
|---|---|
| Alpha Innotec | LW / SW / WZS series |
| Siemens Novelan | WPR NET |
| Roth | ThermoAura, ThermoTerra |
| Elco | Aquatop, Aerotop |
| Buderus | Logamatic HMC20 |
| Nibe | AP-AW10 |
| Wolf Heiztechnik | BWL / BWS |
| CTA | Aeroheat AH CI |
Important notes
Changing settings writes directly to the controller. Incorrect values can put the heat pump into an error state. Only change settings if you know what you’re doing — consult your heat pump’s manual.
-
The heating correction shifts the heating curve. Positive = warmer, negative = cooler
-
All writes are protected against immediate polling overwrite (120s write protection window)
-
The app requires Homey Pro with firmware >= 11.0.0
About this app
This app was developed entirely with the help of Claude (Anthropic AI). All code, configuration and documentation were generated and iteratively refined through AI-assisted development.
Special thanks to Robin Flikkema for his original Luxtronik Homey App which served as the foundation and inspiration for this project.
The app is open source: GitHub – com.luxtronik.heatpump
If you find this app useful, I’d appreciate a coffee: PayPal – Support development
Feedback welcome!
I’m happy to hear from you:
-
Does it work with your heat pump model?
-
What features are missing?
-
Any bugs or unexpected behaviour?
Drop a comment below or open an issue on GitHub.
