... , sauna room partner 3>Titanium heat exchanger,anti-corrosive Swiming pool heat pump1. compressor: Use copeland scroll compressor, high efficiency, low ... heat exchanger3. condenser: use titanium material , anticorrosive. special for swimming pool water.4. expansion valve: use electric expansion valve, and adjust ... the heat pump10.Refrigerant: R417A/R407C/R404A, ODP:0 Swiming pool heat pump