I am current outside of Nashville. In the summer I purchased a second Atwood A/C for my 5er. I had a problem with the DIY installation. After several phone calls, with the seller saying call Atwood and Atwood saying call the seller I got the seller to put me in contact with the local Atwood sales manager. He lived 50 miles from where I am camped. He drove out on a Saturday and saw the problem.
The problem was quickly solved by Atwood sending me the correct part by FedEx.
I am very happy with the Atwood service.