We live in the Pacific NW where air conditioning in homes is not common and the top floor of our townhouse was staying consistently 10+ degrees hotter than the outside temp and not cooling down at night.  We needed some relief for sleeping and could not put a window unit in so I researched portable units and decided on this one.  It arrived quickly and in excellent condition, I had heard horror stories about ordering these units online and having them delivered upside down or on their side and they need to remain upright.  It was delivered properly and undamaged from transportation. The instructions are lacking in detail but there are a ton of videos and tutorials online about how to install the window vents depending on your type of window so I was able to figure that out pretty easily after doing a little digging.  Whole thing took maybe 30 minutes to get up and running and it made a difference in our bedroom quickly.