I successfully installed a state-of-the-art smart thermostat, enhancing the system's efficiency and user control. The new thermostat was configured to optimize energy usage, providing precise temperature control and improving overall comfort. Additionally, I identified and repaired a gas leak in the system, ensuring safety and preventing potential hazards. The repair involved meticulous inspection, leak detection, and secure sealing of the compromised area. The system is now operating safely and efficiently, with improved functionality and reliability.