Normal air cooled chiller just driven by fixed frequency compressor, dc inverterair cooled chiller Normal air cooled chiller just driven by fixed frequency compressor, dc inverter air cooled chiller is driven by high efficiency DC inverter rotary compressor, efficiency is much higher than normal chiller,plus high heating exchange rate of water/gas, especially in winter operation for hot water production, and with precise water temperature controlling. Latest new DC inverter technology application in the world. Produce hot water for sanitary using(65-70centigrade) or for floor-heating using(35-40centigrade), even in extremely cold winter. Intelligent Controlled by panel or wire controller. Multi-programming preset, self-multifunction diagnosis and alert. R410A Enviromental protection refrigerant system. High quality flat-plate heating exchanger. Easy connecting and installation and maintenance. Strong body design for transportation and installation. Capacity supply:7.5kw,12.5kw,15kw, single phase.