DCM22: A/C complete, replaced (3) 20x22x1, (2) 18x20x1, (6) 20x20x1, (1) 20x25x1, (2) 16x20x1, (8) 21 1/2x23 5/16x1 filters. All systems other than unit 4 are fully functional and operating within manufacturer specifications at this time, refrigerant pressures and temperatures are appropriate for outdoor and indoor weather conditions. System #4 is functional in A/C however the system still has all the previous problems (Unit #4 Jan 12, 2024 estimate). Set all thermostats back to auto and 78 cool . Maintenance checklist attached.