I bought two of these.  My elderly parents central a/c died and they would have needed a whole new unit.  I purchased this a/c and it cools their downstairs area just fine.  They are on a fixed income and it really saved the day when the temperatures went up to 97, they stayed cool.  

I bought a 2nd unit for my home, which never had a/c in the downstairs.  When my parents came over and we turned it on, they were kept cool and comfortable.  Very happy with both units.