This was the only air conditioner that would fit in a small window in my kitchen. The room is not closed off to the dining room,  so I was afraid it would get overworked and wouldn't be able to keep the temperature down. To my surprise, the room that this unit is in is usually the coolest in the house. I leave it on Eco and let it do its thing. It's not quiet, but not that loud either. In closing, I am happy with my purchase.