Today I arrived on site and completed a winter tune-up on your system, which is currently working properly. **Indoor Unit (Attic Air Handler):** * Verified the indoor unit is in good condition. * Confirmed the indoor coil is clean and in good condition. * Replaced the pleated 1" filter (20x25x4) using the customer's spare filters. * Inspected the blower wheel, heat exchanger, primary drain pan, secondary drain pan, electrical wires, and ductwork, all of which are in good condition. **Outdoor Unit (Back Yard Heat Pump):** * Verified the outdoor unit is in good condition. * Confirmed the outdoor coil is in good condition. * Tested and inspected the blower motor, compressor, blower run capacitor, compressor run capacitor, fan run capacitor, contactor, defrost control board, and electrical wiring, all of which are working properly within manufacturer's specifications. **System Checks:** * Measured a return air temperature of 63.0°F and a supply air temperature of 94.0