Performed Platinum Comfort Club Membership Tune-Up on Cooling System: arrived to find system running rough with lots of condensation on the duct and a very dirty filter. outdoor coil on condensing unit was also very dirty. replaced the AA213 filter, cleaned outdoor coil, checked electrical components and adjusted airflow at the board to 1400cfm for 3.5ton ac. system is running well with good refrigerant pressures.