Arrived to do a performance maintenance. Started inspection outside and verified operation of all mechanical and electronic components of the condenser. Checked the condenser for cleanliness. Moved inspection inside and measured a temperature split between return and supply air. Performed an enthalpy calculation and found that the system was not cooling at maximum capacity. Measured power consumption of the blower motor and checked system for cleanliness. Rinsed coil free of debris. Performed a final calibration on the systems refrigerant charge. See estimates for recommended repairs. Air conditioning system is functioning properly at this time.