2019 Comfortmaker AC operating in great condition. Aprilaire 210 air filter in good condition. Visual inspection of indoor coil. Flush drain pan and drain lines. Run test unit in cooling mode from thermostat. Delta t of 21F with supply temp of 50F. Initial operating showed that Refrigerant pressures were under spec with a subcool of 0.7F when data plate calls for 11F subcool. Charge in 180z of r410a to bring refrigerant pressures within spec. Current refrigerant pressures are as follows, high 315psi with 12F SC, low 110psi with 12F SH. System is operating properly, efficiently and ready for Summer.
