Agreed with Jeff. I have a 16,500 Btu. It cools fine until you open the salon doors. The unit cant throw enough air around to compensate for the doors but it will keep the humidity down which is fine even if the inside temp is higher than you want.
Also have to keep the curtains closed too.
Ideally 50A service is needed for these boats to distribute the A/C load amongst 2 units.
-Karl
1986, 32' Sedan, twin 360ci, 275hp Chrysler's w/ K&N flame arrestors