1.High cop and low price. 2.Good quality. 3.High efficiency . 4.Low temperature works. 5.Low noise and low pollution. EVI system Air source heat pump1.Apply world famous brand DAIKIN compressor, 4-way valve, expansion valve, the performance is higher and more stable.2.Microcomputer LCD controller, assures free attendance.3.Advanced de-frosting technology, completely remove frost, higher ...