I hate losing a window to an air conditioner for 4-5 months. Once you setup and size the window vent panel it’s easy enough to install and uninstall the unit depending on the changing weather. With a window unit if we have some cool days I’m reluctant to take it out. With this I can roll it to the attic for a few days and sleep with the windows open. We have central air and this is used on the top floor of our cape as the central doesn’t get up there well enough. I find this even helps the central air not to kick on as much. One drawback to any of these portable units is now the compressor is in your room instead of hanging out the window so it is a bit louder. But I am able to sleep through it.