12V A/C anyone?

Cool. Yeah, almost identical on the compressor end. I'm opting to go high up the back wall to get out of the heat too.

How is it on your batteries?

 

You've yet to run your evaporation lines.

I have a Carrier APU but the 110V is $2,000 just in parts and the A/C is another $2,000 and then there's shop charges to get to the professionals to install.

I can get it to run just to keep the main engine warm and to recharge batteries with its 65A alternator. I'm counting on that being enough to keep the batteries up to the task. If not, I have an old APU alt I'll get rewound to 85A. From what I've read, I'm confident one of both configurations will be sufficient.

 

You mean a rivet nut? That's a good idea. I'll certainly consider that. A through bolt means I've gotta disassemble the interior. And as I'd mentioned, I'd have to remove the MDF cupboards and it's the idea of moving them and then putting them back that concerns me. But if I drill holes just deep enough from the exterior, it's more of an "out of sight, out of mind scenario" . Should hold with 4 ¼x20 down each side. I could even put some 3M two sided tape around the back. Or a general use JB Weld.
Thanks

Added: Will need to use an Almac aluminum rivet nut to deal with strength issue of compatible metals.

 

Finally did my install. As the cap of the truck was fiberglass, installing on the back wall was out of the question. The suggestion of running two aluminum angles across the fairings was proposed but in the end I decided to put the compressor assembly on an isolation pad with four heavy bolts into the top of the chain cabinet. I had 6m refrigerant lines which were perfect to go down, under the cab, and up into the sleeper's cupboards. As I wasn't installing the internal unit on the back wall but above the passenger side cupboards this proved efficient. I ran my powerlines straight down the chain rack and into the APU assembly where I tapped into the starters power lines. The controller harness I had to lengthen. It's quite gentle on the batteries but until I get the APU starting again to charge the batteries, I find I have to start the truck at least once a night and run it for an hour.