1, scroll using a new generation of flexible water source heat pump compressor, scroll floating seal, wear, leakage, low noise, smooth and reliable operation of the compressor by one start, balanced operation, the machine runs high life. 2, in order to fully ensure reliable oil return, specially with a well-known brand of shell and tube heat exchangers, heat transfer conditions to optimize and improve the heat transfer efficiency. 3, small size, compact structure facilitates transportation and flexible installation. 4, easy operation and simple maintenance. Based on these characteristics, especially for office buildings, hospitals, hotels, shopping malls and other places of comfort air conditioning cooling and heating.