Forum Discussion
JaxDad
Jun 01, 2021Explorer III
dougrainer wrote:JaxDad wrote:
I guess neither of my motorhomes listened to the experts, both can stay more than cool enough with just the dash A/C.
Mind you, I do understand their limitations and help them a little. Don’t try to block of the cab, that makes it worse, open the rearmost roof vent.
The weak part of dash A/C is not the cooling capacity, a Ford dash unit has more than double the cooling capacity of a rooftop unit, it’s the fan, it’s horrendously undersized.
By opening the rearmost roof vent you create a vacuum at the back of the coach which pulls the cold air to the rear for you.
If your statement about Ford is true, then why does Ford and Chevy option a REAR AC cooling system and control on Suburbans and Expeditions family SUV/Truck?????? I don't listen to experts, I AM one. I base my comments on 42 years as both a RV service Tech and USING both Class A and C's in 90 plus Texas heat for those 42 years. Doug
Because, as I said, the fan is the weak link, it's not a difficult concept to grasp. In order to get cool air to the back they put in a second unit so you don't have to freeze in the front to be comfy in the back.
Frankly I'm kind of surprised an expert wouldn't realize that Suburbans, Ecursions and other units with rear A/C DON'T have TWIN A/C compressors.
Why? Because the single one will provide far more cooling than required.
I DOo listen to experts, they know what they're talking about.
About Motorhome Group
38,705 PostsLatest Activity: Jan 24, 2025