Arrived onsite for ac maintenance on 2 units. Asked customer to turn AC on to confirm operation. Chemically Cleaned both outside coils. 2nd Floor System. Checked all electrical. measured pressures for 410a at 113/300psi with 9 degree sub cooling with outside temperature at 85 degrees. Measured temperature drop at 14 degrees. Cleaned evaporator coil and condensate line. Changed filter provided by homeowner. Covered filter to ensure good airflow. System is running but may have airflow issue. Homeowner will let us know if system is having trouble keeping up.