Champion 3100W Inverter/Generator...run 15K AC on Propane?

Costco has an extremely liberal return policy. Time and time again, I've witnessed them offer full refunds on items after 6-12 months. Even if every person here said the Champion would run a 15k a/c on propane, that's still no guarantee that yours will. Too many variables. Buy the Champion from Costco. If it works to your satisfaction, fine. If it doesn't, simply return it

I concur......ordered and I will find out soon enough!