Product features:  1. safety:water and electric separately. 2. hot water(55 degree) can be provided directly&constantly. 3. convenient: intelligent microprocessor with touch screen display. Trouble  shoot on display board automatically. 4.World famous brand compressor, 4-wayvalve, motor, pcb, heat ex-changer, emerson alco expansion valve used to ensure top quality and high efficiency(energy-saving a s much as 75%). 5. multiple protection function:high pressure, low pressure, overheating, overload anti- Freezing, phase sequence, discharge temperature, suction temperature and so on. 6.All weather operation: stable operation without being influenced by weather. 7.Metal case and stainless steel case are available. 8.Refrigerant of r22, r407c, r410a, r417a are for optional.  9.Automatically defrosting function included.