This hitachi product comes with single motor but the cooling effect is nonetheless from twin motor. I bought RAV518HUD 1.5 ton 5 star AC last summer from Paytm . There are some salient features:
a)Less noise AC
b)Effective cooling
c)Unmatched quality
d)Energy efficient
I suggested my friends to buy this AC and they are also happy with this great product.
After sales service was also good. You can register on Hitachi website for any type of service. Correspondents from hitachi will call and schedule an appointment.