Performed A/C tune-up on a Carrier straight cool system. Checked the electrical, mechanical and performance systems of the unit. Cleared, cleaned, flushed and treated the drain line and cleaned the exterior of the furnace. Verified the compressor wiring is secure and washed the outdoor coil. I found that the blower motor capacitor was below value. I spoke with the homeowner and he chose to have it replaced. I replaced the capacitor and cycled power at the thermostat. No other major issues were found. The system is operational at this time.