Complete 2 system a/c repair and preventative maintenance check. Changed filters. Cleared drain lines. Dusted out electrical cabinets. Replaced upstairs uv bulb. Tested mechanical and electrical components. Found upstairs blower capacitor to be weak (12.5 uf) recommend a repair. Found upstairs ductwork on supply plenum not properly sealed with some air leakage. Recommend properly sealing ductwork for better efficiency and no air leakage. Neither system has a hard start kit, recommend adding on to reduce load on compressor so it starts smoother, runs smoother and therefore lasts longer. Neither system has surge protection, recommend adding on to protect equipment from power surges. Sealed duct connections at supply plenum of upstairs system, replaced upstairs blower capacitor and installed surge protection for both condensers. Systems are cooling at this time.