4-Head Mini Split Tune-Up (Heating Mode) Dispatched to perform a scheduled maintenance tune-up on a 4-head mini split system and verify proper performance in heating mode. System was placed into heating operation and each indoor head was inspected for proper airflow, temperature output, and overall operation to ensure the system is running safely, efficiently, and reliably for the heating season. During inspection, all four indoor units were confirmed to be operational and communicating properly with the outdoor condenser. Verified fan operation, heating response, and consistent heat production from each head. Overall system is currently functioning as designed. Findings / Recommendations All four head units showed signs of airflow restriction and internal buildup beginning to form within the blower wheel assemblies. This is very common in ductless mini split systems due to the design of the blower wheel, which naturally traps dust, debris, and biological buildup over time. Why Al