2nd AC air flow question

[rwmurphy15]

I have a 2013 Fuzion 301 toy Hauler I would like to add a 2 AC in the garage. I had a mobile Rv Repair guy at my house. And he suggest to hook the 2nd AC into the duct work which are right at the vent in the garage and ready to hook right into. And it's pre-wired also. My question is with the existing AC in the front bedroom blowing air towards the garage in the rear. And if I install a AC in the garage blowing air towards the front of the RV wouldn't this be to much air pressure in the duct work that it might blow it apart or to much air pressure pushed against each of the AC's. Or would it be better to just put a duct less AC in the garage. The garage has a wall separating it from the living area.

[Brentw]

Have the fuzion 325, it has 2 ac units, I am reasonably sure that they share a common duck from front to back. Never had an issue running both units at once.

[rsl]

371..... 1 AC is the very front, 1 in the very back. both ACs can operate through ducts or quick dump ceiling grate. They both share dual ductwork that runs all the way from front to rear of RV.

[dcg9381]

I think they call the common ductwork "racetrack" - or something like that.
The AC is far more efficient (IMHO) when dumping. You're not piping cool AC through relatively uninsulated roof space.. But it's going to depend where you want that air to go.

[muddynoll]

When I ordered my Impact 312 I had the second A/C installed at the factory. The second A/C is in the garage area. There is a A/C duct in the garage from the front unit. The second A/C replaced the roof vent and is ducted straight into the compartment through the housing. It is not connected to the roof duct work in any way, it only cools that compartment. I put vents that close on the duct from the front unit, to keep the cold air up front.