On arrival the homeowner informed me he had a company add refrigerant to his system last week. He asked me to check everything out and verify if there is indeed a leak. I looked over the system and performed a leak search. I did see some oil residue on the primary pan but was unable to pinpoint a leak. I did also find the outdoor capacitor is below value on the herm side. I informed the home owner of my finding and presented repair options. He agreed to have the outdoor capacitor replaced and sign up on our maintenance plan so we could monitor the system during our visits. I replaced the capacitor and cycled power at the thermostat. No other major issues were found and the system is operational at this time.