--- title: "Stiebel Eltron ISG" description: "Stiebel Eltron ISG is a Marketplace integration for Home Assistant. It has 912 installs sharing analytics, works locally and was last updated October 26, 2026." canonical: "https://vulpo.app/integrations/marketplace/pail23-stiebel-eltron-isg-component" url: "https://vulpo.app/integrations/marketplace/pail23-stiebel-eltron-isg-component.md" last-updated: "2026-10-22" version: "1.4" --- # Stiebel Eltron ISG > Stiebel Eltron ISG is a Marketplace integration for Home Assistant. It has 912 installs sharing analytics, works locally and was last updated October 26, 2026. Stiebel Eltron ISG connects Home Assistant to a Stiebel Eltron ISG heat pump gateway over local Modbus TCP. It works without the Stiebel Eltron cloud or a Web-Monitoring subscription. It adds sensors, binary sensors, climate controls for several heat circuits, number settings for comfort and eco temperature targets, an operation mode select, SG Ready switches and a heat pump reset button. Supported controller families include WPM 3, WPM 3i, WPMsystem and several LWZ models, and compatible Tecalor devices can also be used. Setup happens in the UI with the ISG host and Modbus port, and Home Assistant may discover the device on the network. It also offers diagnostics and repair notices. Automatic summary of the README and code of pail23/stiebel\_eltron\_isg\_component. Something wrong, or are you the maintainer and want your own text here? [Get in touch](https://vulpo.app/contact) [Open in My Home Assistant](https://my.home-assistant.io/redirect/hacs_repository/?owner=pail23&repository=stiebel_eltron_isg_component&category=integration) On Home Assistant 2026.11 or newer? [Open it in the Marketplace](https://my.home-assistant.io/redirect/marketplace_repository/?owner=pail23&repository=stiebel_eltron_isg_component&category=integration) ## Supports - **Works locally**: Talks to your devices on your own network. No vendor cloud in between. - **Found by itself**: Home Assistant spots it on the network and offers to add it. - **From the Marketplace**: Installed through the Marketplace, formerly HACS. - **Actively maintained**: Its author released or pushed a change in the last six months. ## Setting it up Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services. ### Connect - **The IP address of the Stiebel Eltron ISG**: The IP address or hostname of the Stiebel Eltron ISG web server. - **The TCP port of the Stiebel Eltron ISG (e.g. 502)**: The Modbus TCP port of the ISG (default: 502). ### Change the connection - **Host**: The IP address or hostname of the Stiebel Eltron ISG web server. - **Port**: The Modbus TCP port of the ISG (default: 502). Texts from the code of [pail23/stiebel\_eltron\_isg\_component](https://github.com/pail23/stiebel_eltron_isg_component). ## Entities - **Binary sensors**: Circulation Pump, Pump HK1, Pump HK2, Heat-up Program, NHZ Stages Running, Is Heating, Is Heating Boiler, Compressor, Is in Summer Mode, Is Cooling, Evaporator Defrost, Power Off (EVU), and 45 more - **Buttons**: Reset Heatpump - **Climate**: Heat Circuit 1, Heat Circuit 2, Heat Circuit 3, Heat Circuit 4, Heat Circuit 5 - **Numbers**: Comfort Temperature Target HK1, Eco Temperature Target HK1, Comfort Temperature Target HK2, Eco Temperature Target HK2, Comfort Temperature Target HK3, Comfort Temperature Target HK4, Comfort Temperature Target HK5, Eco Temperature Target HK3, Eco Temperature Target HK4, Eco Temperature Target HK5, Dual Mode Temperature HZG, Comfort Water Temperature Target, and 26 more - **Selects**: Operation Mode - **Sensors**: Actual Temperature, Target Temperature, Actual Temperature FEK, Target Temperature FEK, Humidity, Humidity HK 1, Humidity HK 2, Humidity HK 3, Humidity HK 4, Humidity HK 5, Dew Point Temperature, Dew Point Temperature HK 1, and 131 more - **Switches**: SG Ready Active, SG Ready Input 1, SG Ready Input 2 ## Troubleshooting - **Diagnostics**: Downloads a diagnostics file to attach to a bug report. - **Repair notices**: Notices it can show in Settings, Repairs: Unavailable duplicate entities, Unsupported controller model ## At a glance - Kind: Marketplace integration - Category: [Climate](https://vulpo.app/integrations/category/climate.md), Heat pumps and air conditioning - Number: 912 installs sharing analytics; 106 GitHub stars - Connection: Works locally - Upkeep: Updated in the last 6 months - Needs: Needs the Marketplace (HACS on 2026.10 and older) - Latest version: 2026.9, last updated October 26, 2026 - Domain: `stiebel_eltron_isg` - Source: - Issues: In Vulpo: Quick Toggle card, Climate card, Button card, Select card, Apple Watch, Control Center, Climate Live Activity (Pro) [Widgets & Live Activities in Vulpo](https://vulpo.app/features/widgets-and-live-activities) Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about) Last updated 2026-10-22. Source: https://vulpo.app/integrations/marketplace/pail23-stiebel-eltron-isg-component --- - HTML version of this page: https://vulpo.app/integrations/marketplace/pail23-stiebel-eltron-isg-component - Site index for agents: https://vulpo.app/llms.txt - Everything in one document: https://vulpo.app/llms-full.txt - All pages: https://vulpo.app/sitemap.xml