Sure Start + Honda EU2000 = 13,000 btu Coleman Mach

Make sure you have some sort of start device in your AC unit. The factory start kits are a bit undersized. A Supco SPP6 costs less than $10 at an AC supply house. The SPP6E is suppose to respond quicker if you can find them. The sure start is a whole new animal. It's expensive but so are generators and air conditioners. When voltage drops current increases which means heated motor windings and that will take life off any motor.