... DC inverter Heat Pump: 1. -15 DC low temp. use 2.multifunction, cool,heat 3. 4.8 COP, R410a 4. CE approve Ground source heat ... compressors, 316 stainless steel material welded plate heat exchanger. Comprehensive energy consumption is only65% of ... source , ground source, solar and electric auxiliary heat integrated together (optional), super energy, which can ... ~45°C. Water to water DC inverter Heat Pump