We HATE window AC units because #1 they are so loud & #2 they never seal up good. This unit is so quiet! We can hear it when it's on high but barely! No need to turn up the TV or yell to be heard! It has a sleep mode & then we really can't hear it. It connects to our wifi so we can turn it on before we get to the cabin & get the place cooled off. And we can seal it up nice with the stuff they send with. Plus it sits down into the room so we aren't losing a whole window.