Features: 1) Refrigerant: R410a or R407C 2) High efficiency rotary or scroll compressor 3) Power supply: 220V/50Hz/1-phase or 380V/50Hz/3-phase 4) Easy installation 5) With wiring panel control 6) Tube-in-tube heat exchanger is few influenced by ambient temperature 7) Cooling/heating output capacity: 4kW - 30kW