I’m using this AC from last 4 years it’s amazing, using very less power as we bought 5star rank AC, it’s take max 2 min to chilled your room without any sound it will works silently, it’s very cost effective and low maintenance AC as I’m using from last 4 years we never face any issue in this AC, we don’t refill Gas till date it’s working continuously, you just need to take care few things as directed by company.