Swiming pool heat pump 1>Reliable quality, EOC-Friendy 2>Spa, sauna room partner 3>Titanium heat exchanger,anti-corrosive Swiming pool heat pump1. ... exchanger3. condenser: use titanium material , anticorrosive. special for swimming pool water.4. expansion valve: use electric expansion valve, and ... if there is something wrong with the heat pump.8. display panel can show working state of heat ...