VRV systems / VRF system in Japan, starting at the end of the past century, is a technology that spans the globe. VRV system in our language provision is variable gas flow systems. VRF air conditioning system is an enhanced version. VRF for each indoor unit to the outdoor unit is not required. VRF systems are much more distant from the outdoor unit to the portable. VRF systems use inverter technology saves energy because, allows for ease of decoration. VRF systems are higher than the costs of air conditioning. In common usage in VRF system, each user may be determined by the energy share meter. VRF system cooling in the unit while the other is capable of heating. VRF system control functions of each unit in the control panel and can be controlled.