This air conditioner works great. I have it in the window in my front room and it cools the two open rooms adjacent (kitchen and family room) My home is 1400 square feet, I was hoping with the doors left open it would cool the entire house but unfortunately the air doesn’t make it down the hallway.  My son in law installed this for me and had a couple of frustrating moments but that has to do with lack of instructions anywhere for side sliding windows. Since this is standard in my area (vs up and down opening) you would think there would be more info but he was able to make it work and it does a good job cooling things down.