Inspection: system is 12 years old. Cooling at an 18 degree temperature split. Heating at a 28 degree rise. Emergency drain pan has rust buildup, which can leak water through in case of an overflow event. Torque Booster on condenser is out of range, not delivering adequate electricity to the compressor and fan. Starter for compressor and fan is heavily pitted and charred, making poor contacts and putting excess stress and strain on the compressor and fan. Recommend replacing emergency drain pan to prevent water from leaking into the attic, and replacing the torque booster and starter on the condensing unit.