sgip2000 wrote:
Do your ducted vents have dampers that can be closed? I swapped all my vents to ones with dampers. Close the ones you don't need open and it'll redirect more air to the ones you need.
This is one of the best ways to get better cooling effects from an existing ducted A/C system.
Ours came that way and we adjust the dampers in the duct outlets all the time depending upon our needs.
(However, we have a Class C MH, so as a bonus we can also idle the engine to run the cab air along with the roof air to bring down the coach interior temps in a hurry.)