OTGateway is a powerful open-source solution for controlling OpenTherm-compatible boilers, turning your heating system into a smart one. Set the perfect temperature, save on energy bills, and eliminate unnecessary hassle — integration with Home Assistant makes heating management simple and automated.

Arduino/ESP8266/ESP32 OpenTherm Library for HVAC system control communication

A ESP8266 devkit firmware for the Nodoshop version of the Opentherm Gateway (OTGW)

The Smart Autotune Thermostat (SAT) is a custom component for Home Assistant that works with many compatible gateways for your boiler.

A library to interface with the OpenTherm Gateway through serial or network connection.

OpenTherm Monitor Home Assistant supervisor add-on

OpenThermGateway2MQTT

ESPHome OpenTherm Thermostat

The implementation of OpenTherm communication protocol for ESP8266 with NodeMCU firmware. Written on LUA language. Inspired by Ihor Melnyk https://github.com/ihormelnyk/opentherm_library

Homebridge plugin for OpenTherm Gateway

This adapter integrates all features of the opentherm gateway into ioBroker. Opentherm is an gateway protocol used by several modern heating systems like Remeha.

OpenTherm decoder for Node-RED

OpenTherm adapter to connect your boiler

Subscribes to a MQTT broker and forwards the messages to influxdb

Subscribes to a MQTT broker and forwards the messages to influxdb