WE HV BOUGHT 8 ACS RANGING FROM 1.5 - 7.5 TON FOR OUR OFFICE IN LAST FIVE YEARS AND THE LAST ONE WE BOUGHT THREE MONTHS BACK. ALL THE ACS WERE BOUGHT FROM YR AGENT TRUCOOL, NOIDA. WE FIND FIVE ACS HAVE NOT BEEN WORKING PROPERLY INCLUDING THE NEW ONE. WE MADE SO MANY COMPLAINTS TO YR SERVICE AGENT BUT THEY COULD NOT GIVE US PROPER SERVICE. IT SEEMS THAT THE PRODUCT SUPPLIED BY THEM ARE OF SUBSTANDARD WITH HITACHI LABEL.