I bought this unit in June knowing it would soon be above 100 degrees. Set the unit to 72 on energy saver and it has worked great! It was heavy and we needed two people to lift it into our window but it is well worth it. It cycles on and off quite a bit but I'm assuming that's due to the temperature being 95 or above. We had no air conditioning in our home we put this in and set a fan to direct the air some and it's been a life saver.