Thanks for all the replies, I appreciate your help. The a/c's are working properly with 55 degree air coming out of the vents closest to the units, its just not enough cooling capacity for my liking when we are in hot areas. The coach is wired for a 3rd a/c in the hallway vent location so wiring isnt an issue, just the relative distance to the passengers side wall and the # of existing vents to handle the increased airflow if the 3rd unit were to be ducted. The coach is painted in dark colors which dosent help. Prior to this coach we had a 42 Tiffin Phaeton with 3 15K ac's and it did a good job at cooling even in summer at Las Vegas. This one is adequate unless the temps go above 90 then I would like to have the extra cooling capacity to cool the interior to 72 or so. I just think for the relatively small cost of another a/c that it would be worth it not to be uncomfortable without the use of additional air circulating fans. I have installed and replaced roof airs and have a forklift so I dont see the downside to adding another cooling unit since the wiring is already in place.
