I bought this air conditioner 2 months ago. I'm very satisfied with my purchase. Smart features are seamless and smooth.  No delayed response or alerts with the app as well. Pushes out a serious amount of cooling to the point where i never have it on high or set lower than about 69 or 70. I'm here in NYC where our days are now a high of 97 degrees and it keeps my entire apartment cool effortless ON LOW SPEED AND AVERAGE TEMPERATURE SET.