VRF means Variable Refrigerant Flow. It is a climate system where multiple internal units are controlled by an external unit. A VRF Air-Conditioning System controls the flow of the refrigerant depending on varying capacity needs of the building. VRF Air-Conditioning System is composed of internal units used in order to cool and/or heat living spaces in the building and the external unit outside of the building. The most important feature that distinguishes VRF Air-Conditioning Systems from classical split air-conditioners is that it keeps the comfort of users at maximum level by saving energy thanks to its variable gas flow. The system, which pays maximum attention and respect to the environment, ensures advanced application flexibility that focuses on energy saving. It ensures fully-independent control opportunity in any kind of structure available from a multi-storey plaza to a single villa.