HERU for Home Assistant (Marketplace integration)

Installs: 85 sharing analytics
GitHub stars: 25
Connection: Works locally
Upkeep: Updated in the last 6 months
Version: v1.1.0, August 20, 2026
Category: Climate
Kind: Marketplace integration
Needs: Needs the Marketplace (HACS on 2026.10 and older)
Domain: heru
Source: github.com/toringer/home-assistant-heru
Issues: Report an issue

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

Screenshots From the README of toringer/home-assistant-heru.

About

HERU is an integration for monitoring and controlling an Östberg HERU energy recovery unit. It talks to the unit locally through its onboard modbus interface, using a host name or IP address and a port number. It adds binary sensors, buttons, climate, fans, numbers, sensors and switches to Home Assistant. An optional fan control setting, chosen when the entry is created, adds two fan entities for the supply and exhaust fans. Setting a fan speed changes the unit's standard speed even when it runs in another mode such as boost or away. The unit needs firmware 1.09i or newer, with modbus and network enabled in its service menu, and setup is done in the UI.

Automatic summary of the README and code of toringer/home-assistant-heru. 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

Climate
Fans
Switches
Sensors

Setting it up

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

Connect

Name
Host name or IP address
Port number
Enable fan control⚠️ WARNING: The fan control is an advanced feature and should only be used by users that understand it. See the README for more information.

After setup

Host name or IP address
Port number

Texts from the code of toringer/home-assistant-heru.

From the README

Control and monitor your Östberg HERU energy recovery unit from Home Assistant through the onboard modbus interface.
Note: The integration requires HERU firmware version 1.09i or newer. Version 1.09i introduced one decimal to temperature sensors, and therefore needs to be scaled. The integration has been verified with HERU firmware version 1.14.

From the README of toringer/home-assistant-heru, MIT License. Shortened.