The Windmill 8300 BTU works great, is packaged well and super easy to install. This is definitely the least amount of work I have ever done to install a window AC unit, so super convenient. I did have an issue with my first unit, the compressor didn't work but the company quickly resent a brand new unit and one of the founders reached out to make sure it was sent priority. Ill give this 5 stars because its tough to complete with the established manufacture's and they clearly care about their product quality.