Originally Posted by miltflyfsh
Thank you Dave, for your suggestions. Sorry to be getting back to you so late but the storm took out our electricity for about 36 hours. I believe you are correct, it is an Acme installation. My Land Yacht is a gasoline model with a 454 engine and the controls for the A/C are push button. I thought it was fixed two years ago, however last summer I was not able to get away although when I checked it several times it seemed to be blowing cool air. But I should mention that it has never been able to produce air as cool as any vehicles that I have previously or currently own, which makes me skeptical. When I started it this summer I expected it was not going to be very cool and it wasn't so I took it to my local garage to have the freon topped off but that was a disaster in that it was warmer when I drove it home. I had an RV dealer rebuild the system two years ago, including all new hoses and fittings but I suspected that it was not their specialty as they seemed to be struggling with the job. I am about to take it to a new place that claims to specialize in A/C repairs as well as various other areas of repair. I went on line to locate them. If they don't work out then I will follow your advice and inquire at all local truck dealerships. The repair facility that I have chosen does claim to do work on trucks and buses so I am hopeful that it will finally be the right choice. I very much appreciate you taking the time to give such a detailed response and would be glad to hear any other thoughts that you might have.
I have the same AC you have...it is an ACME installation and I had mine completely rebuilt about a year ago (I live in a hot part of the country and having a working dash air system helps a lot!).
However, at idle, the dash AC just doesn't cool. As soon as I start moving down the road, you notice a difference right away. Also, if its extremely hot outside, and I'm not running my roof AC at the same time, the dash air will not cool very well...its the same system used in cars and trucks and just can't cool a space as big as a motorhome on an extremely hot day! If its just warm outside...the dash air works great!