This air conditioner is everything our family needed. Due to my sons health issues we had to take out our old window ACs because they were having an effect on his lungs. Having no AC in Brooklyn for a family of five was becoming a huge problem. Discovering windmill air has been a lifesaver. We are able to maintain a comfortable temperature, with clean fresh air that does not compromise my sons health. It was also very easy installation, I did it myself in ten minutes all while taking care of 3 toddlers. Thank you windmill air!!