Arizona Kid wrote:
"We are testing a generator that will fit but are finding the price of diesel generators to be about three times the cost of propane gas generators. With the help and suggestions of customers, we will come up with solutions that make sense."
That was posted 2 years ago, and all he said was they were testing one. I don't think they ever found a diesel generator that would work for them. It seems, as Davydd posted, they are working towards an engine generator, and larger battery banks.
http://sprinter-source.com/forum/showthread.php?t=27323&highlight=advanced+air+conditioning&page=3
Dimonsdea had mentioned in Oct of 2013(when he bought his) they hadn't been approved for a dual engine generator yet.
He also mentions he can't run the Ac all night.
UD