Originally Posted by Sandrooney
Very easy. I was lucky enough to have access to a friends shop and forklift. Mine was just a replacement and all the wiring was there. Hopefully you have a fan vent in your garage so the 14x14 hole is already there. Mine did when we had the A/C installed in our garage. We had it wired to a separate 30amp plug so we use both the 50 amp and 30 amp at the campground. That way it works independently from the other 2. The way it was explained to us if we would have wired it in with the other 2 then all 3 compressors could not run at the same time they would have to kinda take turns or something weird like that.
That is the most difficult part of the entire job, getting the unit on the roof. I am still contemplating on whether or not to replace my current Advent 13.5 with a Dometic 15K that is lower in height. I store my trailer in our barn that is 11' to the truss, and I have to remove the cover off the AC unit to get it in. With the shorter units I would not have to do that.
The other reason is for better cooling, but I found in taking the inside cover off, that the ducts are partially blocked by the foam used in the plenum. So I will trim those first and see if it cools better.