I AM USING HYUNDAI HS4154.GCO-CM INVERTER AC FROM 1 YEAR ITS COOLING IS AVERAGE AND I WILL GIVE IT ONLY 3STARS BECAUSE ITS COOLING RATE IS VERY LOW AND IT COOLS DOWN EVERYTHING IN MORE TIME THAN COMPARED TO OTHER AC AND ALSO IT IS BEST PART OF THE REST OF THINGS HYUNDAI HS4154.GCO-CM IS AVERAGE AC I SUGHEST