I enjoy this units efficiency, it cools my room and I only use it on Eco so far . I had some issues with it fitting my window but I don't think many people would have same problem and I was able to make it work with some extra work . I have not bought the filters for allergens yet but I'm happy there is a option for that as I have bad allergies. Only real downside for me is this unit seems very loud , I am about 7 ft from it and fan setting above 1 it's hard or impossible to hear tv.