This definitely keeps my medium sized living room very cold. I love the fact that I can control it with my phone via the app for it. I usually keep it on automatic so I won’t have to worry about a high electricity bill keeping it up too high when it isn’t too hot outside. 
I love auto mode because when the temperature is cool to somewhat cold at night outside. The air conditioning unit will shut off, and when shut back on when it starts getting warmer outside and inside. Well worth the purchase and I recommend it.