Replacing Roof Top A/C units
We're doing a major renovation of our 10 year old National MH this year, (roof work, slide seals and paint) and I'm thinking about replacing both Duo-Therm A/C units only because they are 10 years old...
Forum Discussion
jmaddy wrote:
I cannot locate my AC manual for my 1999 M-6350 National RV. Which brand will replace my existing units? I don't want to modify the existing hole in the roof. Does anyone know what the roof hole size is on the 6350?
Thank You in advance.
ALL National Products and ALL RV's have the same size hole for a RV roof top AC unit (14 inch square). Your AC units are made by Dometic. National always used Dometic. 1999 means you have the Dometic wall CCC 4 button tstat control system that uses a telephone type cable top communicate between the 2 roof AC units and the wall tstat. That system was obsolete in 2001. That means the easiest and simplest thing to do is purchase new Dometic AC units and I would get the Penguin Model, because THAT model has the new AC tstat control boards already installed. You only have to purchase the new 12 button Dometic wall tstat. The 1 tstat controls BOTH AC units. Just like your present Wall tstat. Doug
