I purchased this air conditioner a few weeks ago and now that I have got used to the setting I am able to give it a review,The noise of it is average to most portable air conditioners, it’s powerful and the design and display is very stylish and modern, I like the sleep function which turns itself off once it reaches the the temperature set by the user and when the temperature rises it simply starts up again, it has all the features and functions you would want, I can sleep perfectly well with the machine on but I am a little hard of hearing and after a while you would get used to it, a bit like living next to a train line you get used to it, the machine is set up in my bedroom and it actually cools the whole of my bungalow down to a comfortable level, the only snags are the vent pipe is not very long and to combat this I positioned the unit securely on top of a old bedside table I have and the other snag is plastic vent that can be used only on some types of windows, if you have internal glazing then the plastic vent would be okay but if you have windows like mine (see picture) then it is of no use, but apart from that this is a fantastic and powerful machine just make sure you use the pipe to vent the hot air out through your window or other outlet. So this is a great and well designed air conditioner and I would recommend it if you’re considering buying one, I also bought the extended 4 year warranty with this unit and I kept the box and packaging in the shed should I need to return it should a fault occur.