I've had this a/c now for 2 months. Works great cold air and strong fan. It cools my whole 2nd floor when I leave my bedroom door open. I have 2 bedrooms and a bath room up there. Only flaw is when using the app when you change any settings, it may show that you did on your app but it actually didn't change anything on your a/c. I've tested this many times standing right in front of the a/c. It's a 50/50. Sometimes it works and sometimes it doesn't. Not consistent.