This smarty device is introduced now a days.Acually this device installed in split A/C and window A/C.After the installation of his device the A/C will consume 35%-50% less electricity.When i installed this device in my split A/C mitsubishi 1.5ton and L.G 2ton.Before the installtion of this device the mitsubishi 1.5ton taking 9 ampere now it taking 5.2 ampere and L.G 2ton taking 16 ampere berfore and after 8.5 ampere is taking.U can say that 2.0 A/C drops 4 units per hour now it drops 2.2 units now.The question is rise in ur mind regarding the coolling but the performance and the cooling is same as before.The results of this device is wonderfull.I am fully satsfied.