Today I completed the annual maintenance service on a Carrier Comfort Series central air conditioning system for a homeowner in Beaufort, SC. I started by thoroughly cleaning the outdoor condenser coil to improve heat transfer. Next, I replaced the air filter and inspected the blower assembly to ensure proper airflow. I then tested the refrigerant charge, topping it off with 6 ounces of R-410A to meet manufacturer specifications. Finally, I checked all electrical connections and system controls, confirming the AC is running at peak efficiency for the hot Lowcountry summer.