1.Modular design ; 2.Inverter stepless modulation 3.75% cooling efficiency 4.Ultra-high ... , DHW domestic hotwater and swimming pool, etc.Inverter Technology, Energy SavingDC inverter motor could adjust fan speed automatically according to ... and environment protection.Low Noise, Comfort SpaceNo compressor, fewer moving mechanical parts, diaphragm solution pump, fan with variable frequency,create a ...