What is the continuous rated amp output for this costco generator ?
Honda 2k is about 13 amps
Check with dometic. They make a 'soft start' kit for aircon to allow use of a honda 2k
My aircon does not draw air from the outside, but from inside the boat. I think most boat aircons are this way. So the a/c sucking in fumes from outside is not an issue. But care should always be taken to make sure fumes are vented away from the boat and a co detector is a must