---------------------------------------------------------------------My AC is in the port seat opposite the sink right on the center line well close.! Than to a Plastic splitter like 5 or 6 inches to 4 inches the big one goes to the slatted cabin ate port side to the rear of the book shelf. and the 4 inch flex AC duct snakes thru the port seat to the head and up 2 feet to go thru the head cabinet than a teak long box was built to hide it over top of the shower faucets and on to the vee birth where a round adjustable vet is on the bulkhead.
Really I'm in florida , More AC than heat, so there is not that much loss in space and thru hull is at least accessible. The one large vent really does do the job. We sleep in the main salon.
At anchor i have the 5k generator to run things..
Where do you guys have the outflow from the units ?Thomas, I installed mine same place as you and i can still put hanging stuff in there, just not really long items. The unit does a great job cooling it off and the reverse cycle heat is nice in our mild winters here in Florida...