Daikin Modbus for Home Assistant (Marketplace integration)

Installs: 84 sharing analytics
GitHub stars: 25
Connection: Works locally
Upkeep: Updated in the last 6 months
Version: 1.0.7, October 7, 2026
Category: Climate, Heat pumps and air conditioning
Kind: Marketplace integration
Brand: Daikin
Needs: Needs the Marketplace (HACS on 2026.10 and older)
Domain: daikin_ha_ekrhh_modbus
Source: github.com/gerione/daikin-ha-ekrhh-modbus
Issues: Report an issue

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation.

About

Daikin Modbus connects Home Assistant to the Daikin EKRHH home hub over Modbus TCP, covering heat pumps. It supports Altherma 3 and Air to Air units, and Altherma 4 support is experimental. It communicates locally and adds binary sensors, numbers, selects, sensors and switches. The README describes monitoring of heat pump status, temperatures and energy usage, plus climate control and energy tracking. Setup happens in the UI, asking for the hub address, port, Modbus address, polling interval, a sensor prefix, and whether an extra heating zone or an Air to Air pump is present. The hub must be set to a Modbus use case with TCP/IP for the integration to work.

Automatic summary of the README and code of gerione/daikin-ha-ekrhh-modbus. Something wrong, or are you the maintainer and want your own text here? Get in touch

Supports

Works locally Talks to your devices on your own network. No vendor cloud in between.
From the Marketplace Installed through the Marketplace, formerly HACS.
Actively maintained Its author released or pushed a change in the last six months.

Provides

Switches
Sensors

Setting it up

Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services.

Define your Daikin EKRHH modbus connection

The ip-address of your Daikin EKRHH device
The prefix to be used for your Daikin EKRHH sensors
The TCP port on which to connect to the Daikin EKRHH
The modbus address
The modbus registers polling interval [s]
Is there an addtional heating zone present?
Is it an Air to Air heatpump?

After setup

The ip-address of your Daikin EKRHH device
The prefix to be used for your Daikin EKRHH sensors
The TCP port on which to connect to the Daikin EKRHH
The modbus address
The modbus registers polling interval [s]
Is there an addtional heating zone present?
Is it an Air to Air heatpump?

Texts from the code of gerione/daikin-ha-ekrhh-modbus.

From the README

Integration for the Daikin Home Hub (modbus gateway) for Altherma 3 and Air 2 Air heat pumps.
The newest release also adds experimental support for the Altherma 4 heatpump.
Altherma 3 and 4 support
HomeHub Support
Real-time monitoring of heat pump status, temperatures, and energy usage.
Climate control (set target temperatures, modes, and fan speeds).
Energy tracking (power consumption, efficiency metrics).
Modbus TCP/RTU support.

From the README of gerione/daikin-ha-ekrhh-modbus, MIT License. Shortened.