HVAC Repair Service: While assessing an underperforming AC unit at a residential property, my diagnostic examination uncovered low refrigerant levels as the root cause. To address this issue comprehensively, I proceeded with a refrigerant recharge. This not only restored the unit's cooling capacity but also involved a meticulous evaluation of the entire refrigeration system to detect and rectify any potential leaks, ensuring long-term efficiency and optimal performance of the AC unit.