Replaced an old window unit with a Windmill and honestly couldn't recommend it more to anyone looking for a new window AC unit. The kit that the unit comes with is amazing and really helps to keep the cold air inside, rather than escaping out plastic side panels that don't seal well. The app is great as well. My favorite feature is the kWh monitor, which shows you how much energy the unit is using (or isn't using, in the cast of eco mode) over time. I was pleasantly surprised that the cost wasn't much greater than most other brands you'd find at big box stores. Overall, would definitely purchase another one if I ever needed another unit replaced in my home.