Arrived to do a performance maintenance. Started inspection inside and measured a temperature split between return and supply air. Measured power consumption of the blower motor and checked system for cleanliness. Found that there is bacterial growth present on the condensation pan for the evaporator coil. Performed a static pressure test and found that the system was well beyond the rated maximum. Reached out to a field supervisor to finish the diagnosis on the systems static pressure. With their help was able to bring the system within compliance with manufacturers specifications. Moved inspection outside and verified system refrigerant charge. Found that the dirty coil was keeping the system from freezing up. Verified operation of all mechanical and electronic components of the condenser. Found that the capacitor for the condenser is on the verge of failure. Rinsed coil free of debris and removed leaves from the inside of the unit. Air conditioning system is operational but likely t