Put this in my Master bedroom window May 6th. This replaced a Frigidaire 5000 BTU unit I gave away. The first thing I noticed was the air output had no up and down adjustment; only side to side. I turned it on, and was surprised at how noisy it was. Especially when the compressor turned on. My last unit, you couldn't even tell when the compressor kicked in, it was so quiet. When it got the room to the preset temperature, I discovered that the compressor kicks on every 4 minutes and runs for 30 seconds or so, then turns off. Waits 4 minutes then kicks in again. Wondered why it has to turn on so often all night, which is the only time it runs. The room is only about 200 sq. ft. and the outside temperatures have not even hit the mid summer highs yet. Also, when I turn it on using the remote, it always goes into energy saver mode, which is not where I use it.