1 system CCM- Checked heating operations of Duel fuel 2014 Rheem furnace and heat pump. Replaced 16x25x1 filter, Checked capacitor outputs and amp drawls, Checked refrigerant levels and auxiliary heat, Triggered safety switches and defrost mode, Checked delta T, and cleared drain line. System is operating properly at this time. Pics uploaded Also recommended a drain safety switch, new condensation pump and a carbon monoxide detector. Customer approved the BEST option with installing all 3, Has a 1yr warranty on parts