Developed a critical enhancement for the openhab/openhab-addons repository, focusing on expanding HeatPump device integration with Melcloud. The work introduced flow temperature settings and unit status retrieval, enabling users to control and monitor HeatPump devices more precisely through the cloud. Leveraging Java and XML, the implementation centered on robust API integration and IoT development practices to improve device state reporting and facilitate proactive energy management. By aligning with Melcloud’s data path improvements, the solution provided richer device control and faster troubleshooting in production environments, reflecting a focused approach to extending OpenHAB’s smart home capabilities within a one-month development period.