Arrived for ac not cooling again. There was water in the drain pan again and it tripped wet switch. Replaced switch, vacuumed out water. I did see that the filter being used was a 20x25x6 MERV 13. That’s a restrictive filter for the air handler. I replaced it with a 4 inch MERV 8. Drain is draining properly. I rinsed coils outside. Pressures and charge are good on system. I’m thinking the filter was restricting airflow and causing some freezing of the coil, and water leaking into pan. System is running upon departure. Thanks for choosing LBA.