After a few thousand hours of use, my rear A/C unit decided it had had enough, and has taken a permanent nap. Now you might think my wallet is going to take a big hit with this issue. Not so. You see a few years ago, I got the idea of helping out my factory installed roof top 15K btu unit. I made some removable brackets, window panels, and put a $99.00, 6K btu window unit in the rear of my rig. Works just like a window unit would in a residential home. My add on did not require any destruction to my TT's window opening. It worked so well that I did the same thing at the front of my TT, only this time it was a 12K BTU for $179.00. These units working together also meant I did not have to run my factory roof top unit. I think the replacement cost for the roof top unit is $1400.00, + labor.
Now obviously my TT's electrical system is not designed to run these two window units. I never intended it too. And, I would never use these two window units unless I was hooked up to a some what long term shore power, which I am now. My TT is hooked up to the 50 amp supply, and these two window units are hooked up to the 30 amp supply on the park's pedestal. This also means if I want to turn my roof top unit on during exceptional hot days I can. The park service has no problem with me using the extra A/Cs, and they don't look bad at all.
All I do when installing these units is remove the window screen, put in the brackets that hold the A/Cs, install the panels that the A/Cs slide into, but closes off the rest of the window opening, then just slide the A/C unit in and plug it in. To do both units takes me about 20 minutes. Removal is just as easy. The windows swing upwards, and held open with a piece of PVC, and a strap to keep them from moving during a wind storm.
Since I already had a spare A/C unit, today's A/C replacement took about 20 minutes. The napping A/C was put to rest in the near by dumpster.
This brings up another idea. What if RV manufacturers were to design slide outs that handled window units instead of these high priced roof top units? What a cost saving concept.