First floor system is low on Freon and the heat exchanger is in poor condition. Strongly recommend replacing system for safety, efficiency, standards, and warranty coverage. Upstairs is a two stage heat pump from Trane. Repaired two stage wiring to heat pump cleared drain lines and treated with enzymes. Replaced a capacitor and topped off refrigerant charge to keep running efficiently and at peak performance. Strongly recommend flood protection, added to both systems.