The flow of refrigerant, variable (VRF are) from a variety of air conditioning technology has been that in 1982, the company Japan invented. Like air conditioners VRF are from the refrigerant for cooling and heating uses. The refrigerant in the A circuit, by a panel of external between several panels, interior in circulation.

system VRF are usually has compressor DC inverter to provide variable speed motor and thus the flow of refrigerant is variable.(Unlike the systems simple on/off).By the agent working at different speeds, the VRF are able to save energy in times a minor can be. With the recycling system, energy system, VRF are able to provide the same time heating and cooling we are. In comparison with other systems, energy saving systems, VRF are more than 55 percent.