I bought this unit about a month ago, when my central air went out. It is summertime in the deep south, so no air means there will be suffering. However, I toughed it out long enough to put the unit together and install it. My living room was 92 degrees when I turned on the air conditioning so I didn't expect much relief right away. After about 90 minutes at 60 degrees it cooled the room down and by the next day I had to raise the temperature because I was freezing. This unit exceeded my expectations,  and now keeps the living room and kitchen livable until the ac repair folks can get here. I am an old woman on disability, and this was my first installation of anything since my husband died. The weight of the product was a bit much, but this old bird got through it and I'm a cool granny now.