Performed routine maintenance on a Buderus Logano G115 boiler. Inspected the burner assembly and heat exchanger for signs of wear or buildup, and cleaned them to ensure efficient operation. Checked the pressure relief valve for proper function and tested the thermostat to ensure accurate temperature control. Verified the water level and adjusted as necessary. Replaced the air filter and checked all electrical connections for safety and stability. After completing the maintenance, I ran the system to confirm it was operating efficiently and safely, ensuring reliable performance throughout the heating season.