Vaillant eBUS

Disclaimer: This project is an independent third-party integration and is not affiliated with, endorsed by, or connected to Vaillant GmbH in any way. All trademarks belong to their respective owners.

Home Assistant integration for Vaillant heat pumps via direct ebusd TCP — no MQTT, no cloud.

• Drop-in replacement for mypyllant API integration — same entities, no cloud
• Direct TCP connection to ebusd — zero MQTT setup required
• Dynamically discovers available circuits and registers on connect
• Generates native Home Assistant entities for sensors, controls, climate, water heating, calendars, and dates
• Climate entities with quick veto and away mode (calendar-based scheduling) — one thermostat and flow-temperature-range per discovered heating zone on multi-zone systems
• Cooling control — read and write the manual cooling period ("cool until [date]") via the climate COOL mode and dedicated datetime entities
• Water heater entities with DHW boost and temperature control
• Read & write any register via HA services (vaillant_ebus.read_parameter, vaillant_ebus.write_parameter)
• Custom registers via --enabledefine (e.g. room humidity, manual cooling dates)
• YAML overrides for entity metadata (names, icons, units)