I purchased this a/c just a couple of weeks ago so I don’t have a lot to go on. So far it’s doing what it’s supposed to do, which is to keep the entire lower level of our house cool. So I’m happy with it, so far. I just hope it’s as durable as it’s predecessor, which was also a Frigidaire. It lasted 24 years, much of it in the window year round. It was still working but I decided it was time for an upgrade.