Completed cooling tune up today. System runs on R-22 refrigerant that is no longer manufactured. Refrigerant charge looks okay at this time. There was water around the furnace but the coil didn’t freeze up when I was there. Customer discussed that they run the AC very low at night. Likely the system is cycling very low return air and freezes the condensation on the coil. Washed the outdoor coil. System operating as expected at this time. Thank you for choosing LBA services. Your technician today, Jake.