The exterior unit is a very noisy one. I am also using a volts ac which was bought a year back ...comparing the both the ac, the volts unit is very silent. I am disappointed with my Carrier ac purchase. I bought it thinking it's a good ac brand...I won't be buying carrier ac again.
After installation it's almost a month and it's cooling capacity is too low than flipkart shows in it's ad. room is airtight but as soon as i turn off ac, room becomes hot again in minutes, even doors & windows are closed. Room size is small. This ac is very disappointing.