I was called to a home to perform routine maintenance on an air conditioning system. Upon arrival, I verified that the airflow was good and the amp draw was also good. I checked the outdoor unit and found that the refrigerant side was slightly overcharged due to a friend coming out and filling up the system. I checked the amp draw again and it was good. The client stated that a capacitor had been replaced a few days ago. I replaced the capacitor and tested the system again. The air conditioner was now running smoothly and efficiently.