Performed full tune-up. • Outdoor unit: Service port threads are damaged — could not attach gauges. Photos taken. • Refrigerant status: Based on history, system appears low on charge. No refrigerant added today (R22 is phased out). • Coil condition: Evaporator coil is corroded. • Leak likelihood: System is hermetically sealed; low charge + coil condition suggests possible leak (not confirmed today due to gauge access). • IAQ: Biological growth observed in the air handler. Recommendations / Next Steps 1. Repair/replace service port so we can perform accurate readings. 2. Schedule leak verification (nitrogen + bubbles or dye). 3. Given age, R22 phase-out, coil corrosion, and suspected leak: discuss repair vs. replacement with a Comfort Advisor. 4. Address IAQ (cleaning/treatment and UV option).