cavie wrote:
What do you mean by "only need to top unit?" It's all one piece pluse the inside grill and filter holder.
I believe that all RV air conditioners are two piece units. The top piece, which mounts on the roof, contains the compressor, fans, etc. and the bottom piece, which mounts through the ceiling inside, contains the control unit, filter and ducting routing. The bottom of this inside unit has the grill that you see.
When you purchase a new air conditioner, you must purchase both a top and bottom unit unless, as mentioned above, your existing one will work with the new one.
I just went through this exercise a few years ago.
Barney
