Arrived for a cool check on a horizontal furnace zone system. Replaced all six air filters. Cleared and treated the condensation drain line. Checked electrical upstairs as well as cleanliness of furnace. Proceeded outside to the condenser, cleaned coils and checked all electrical. The condenser fan motor is in good shape, but the outdoor capacitor is below manufacture specs. I recommended replacement of the capacitor, but the customer declined. Checked refrigerant levels and they are within spec. Both thermostats were cycled and the unit is cooling at this time.