Safety Environmental air source heat pumps from Guangdong Xingfeng Refrigeration Equipment 1. Safety: water is set a good place to totally isolated from the electric,free of fear to be shocked by power. 2. High efficiency:for Hot water up to 55 degree or more can be supplied directly or constantly 3. Smart for life: Intelligent chips in mechanism with a touch screen display. 4. World famous brand compressor, 4 way valve,motor,PCB,corrosion resistant heat Exchanger Emerson controllers 5. Multiple protection function: High pressure,low pressure, overheating, overload anti-freezing, phase sequence, discharge temperature, suction temperature and so on. All weather operation is stable without being  influenced by weather. 6.Safety case protectors are available. 7.Green to environment:Refrigerant of R 22  R 407 C ,R 410 a, R 417 A, R 134 A are for optional. 8. Lasting long life ensured: automatic defrosting function