1.It has all the features that Water Cooled Screw Chiller has.                                                         2.For it exchanges the energy between the source, so it basically escape from the ambient nvironment's change.                                              

3. It could not set out any pollutional material,so it is nvironmental.                                                  

4.It has no out-door facility,so saves space.             

5.its lower maintenance for no out-door facilities.

6.It has three functions ensemblely: heating, cooling and providing the Domestic hot water .