all i can say is i watched it easily start my 15k unit.
The eu2000i starts my 15k unit without any modifications or enhancements. The bad news is that after the air conditioner's head pressure builds up, the power draw exceeds the maximum continuous rating of the eu2000i. My initial joy turned sour when I saw this, and I don't run the air conditioner from the eu2000i any more. Your air conditioner might do better. Make sure you check it out on a day similar to when you need it, because the hotter it gets, the more power it draws.