1.DC inverter type (Heating Capacity:9.2~28kw)2.Anti-UV ABS plastic shell, anti-corrosion3.Ripple fin titanium air exchanger 5~8% more efficient than standard heat exchangers No welding points reduce gas leakage risk by 30%4.Reliable and high efficient flexible compressor5.Emerson expansion valve or Carel EEV6.Water proof display and keyboard for operation7.DC-inverter fan motor with Nylon fan blades, low power consumption, low running noise long usage life8.Indoor touch screen 5" display9.WIFI and remote software upgrade10.PID controller11.Free Download of the APP, for total control of the heat pump12.Pressure sensor13.Registry of error code14.Automatic SOS system15.CE approval