I had bought an 8,300BTU unit, it worked fine but it was not enough for my room, so I changed it for this 12000BTU unit, this unit just arrived today, I installed it in the window correctly, it does not cool anything, in fact it cools less than the one I had I previously had 8300BUT. It turns off from time to time, makes a strange noise, it lasts 3 minutes like this and then turns on again, the temperature is not displayed correctly in the mobile app. In Cool and Fan high mode it cools even less than when it is in energy saving, it is crazy because it should be the other way around. I called several support numbers, nobody knows anything or gives me any solution, they just tell me the same thing that the manual says, which I have read 10 times and I already know everything it says. Don't buy this, customer service serves less than their products.