WOW. I opened a can of worms. For the record it is a 2 month old 42 ft fifth wheel and has 2 ACs, a 15K in the main area and a 13,500 in the master (it is a bunk house model) The 13,500 cools the master like there is no tomorrow when I set in on dump. Both units are ducted in the duct work. Granted I'm one of those people that aren't happy if I can't acheive 72 degrees inside no matter how hot it gets. No offense to anyone outside of Texas, but unless you've been here in the summer, your reality may be a bit off (OK, some southern Louisiana and Florida folks may get a pass)
I know all the rhetoric about 20 degree drop, yadi yadi, but if you have enough money you can get square baseballs, right? the service is 50 amp and a few extra amps won't kill the system.
I am going to have the 15K unit checked out since I don't percieve the temp drop that I think it should have (only comparing the temp of the air coming out of the unit), but it may be because the incoming air is warmer since the kitchen/living area is so much larger than the master area.
I love this forum and appreciate all the comments, input and feedback, even if you think I'm crazy for wanting it 72 inside when it is 100+ outside.
Of course the other option is a third AC, but the simple answer would seem to be a larger main unit.
By the way, what is a basement AC? Is it like a ductless mini split for RVs? Never heard of that.
Oh and the duct leakage may be a valid concern ( I am amazed at the workmanship - or the lack therof -for 50K) however I'm commenting on the ability to cool the main area when dumped not ducted.
