Completed AC tune up for 4 ton Carrier AC system Replaced 20x25x1 Inspected condition of both the indoor and outdoor coil Measured temperature split (67-46=21°Good) and static pressure Ensured drains were clear. Left estimate for wet switch which will shut equipment down if water is detected on floor near equipment. Verified operation of condensate pump. Inspected wiring, controls, electric motors and components: Discussed and left email estimates for surge protectors. Verified integrity of compressor motors using megaohmeter. Monitored R410A refrigerant pressures and diagnostics: Good Cleaned dehumidifier filter with shop vac. Humidifier has an access door on opposite wall. I reoriented bypass damper so damper handle is accessible without having to remove access door. Will need a T25 bit or driver to remove screws to access door for servicing humidifier. Completed tune ups for MiniSplit with (2) indoor heads (floor mount). Inspected wiring and controls. Cleaned filters as necess