Today I arrived on site and performed a winter tune-up on the system. **Indoor Unit (Air Handler):** * Confirmed the air handler is located in the closet. * Verified the indoor coil is clean and in good condition. * Checked the 1" pleated filter (20x20x1). The customer has spare filters and will replace it themselves. **Outdoor Unit (Heat Pump):** * Confirmed the heat pump is located in the backyard. * Verified the outdoor coil is in good condition. **Electrical Components:** * Tested and confirmed the blower motor, compressor, blower run capacitor, compressor run capacitor, fan run capacitor, contactor, electrical wiring, and compressor start capacitor are working within manufacturer specifications. **System Components:** * Inspected and confirmed the blower wheel, heat exchanger, primary drain pan, and electrical wires are secured and in good working condition. **System Testing:** * Recorded a return air temperature of 73.0°F and a supply air temperature of