View/Navion & Staying Cool
Hello, It’s been a while since I posted on RV.net but we are considering a new rig and am starting to do some research. One of our biggest questions / concerns since we now live in the desert SW is...
Forum Discussion
pnichols wrote:
Regarding use of the cab A/C system - whether it be a Sprinter, Ford, Chevy based chassis - it's most effective if you don't expect the cab A/C system to keep cooling fresh incoming hot air from the outside.
Set the cab A/C system to it's recirculate mode so that the system is merely adding cooling to already-cooled interior air.
In numerous tests me and a bunch of others have proven this is not the most effective way to do it.
The fan in the dash A/C system is by FAR the weakest part of the system.
That’s why so many people incorrectly believe the rooftop unit is more powerful when in reality (in the case of a Ford C chassis) it’s barely a quarter the capacity of the Ford unit in the dash.
You need to move air, and LOTS of it.
Opening the rearmost roof vent completely and leaving the dash A/C on normal has been (informally) proven to be the most effective by far.
