This paper presents an experimental study and determination of performance of a split-type inverter air conditioner basedon refrigeration cycle using ejector. Instead of conventional expansion device ejector recovers the expansion process lossby generating isentropic expansion process and also by increasing the cooling capacity and decreasing the powerconsumption. Hence the objective of proposed research is to replace the capillary tube with an optimized ejector and alsocompare the performance of R-22 with R-290. It is expected to considerably increase COP as well as reduce the emissionof greenhouse gases in the environment. Laws of conservation of mass, momentum and energy equation would be usedto determine the dimensions of ejector. With the use of ejector and R-290 the COP of an AC is expected to increase byabout 32.90% was claimed by K. Sumeru et al. [1].