Good performance.The Ac is very nice.the performance is brilliant.although I have installed in the gust room and is used arldom.The Engineer who came to install the AC was poor and did not listen to the instruction.and made faulty installation.When I swith on the MCB.the outdoor unit automatically starts without even sterting the indoor unit.I launched a complaint.the engineer came and said the PCB is faulty.He ordered a new PCB.After 10 dayes new PCB came and again the same problem after replacing the PCB .I told the engineer that I dont feel the PCB is faulty on the very first day.The installation is faulty the new engineer came and look helf day to fix the faulty installation.The machine is GOOD.but the WHIRLPOOL engineers are poor.but- Ac cooling is good and fast.This usually depends on your room size.My room size is 13x10 ft and it cools the room Quickly.