I've learned a lot in the last 24. Since I am staying Coleman, I can use the new top unit with my lower mount. Since I am ducted I only need the top unit, but since I have dual climate zones with the optional electric heating element, I needed to order a unit with the element (or add it on) and an optional controller board within the air conditioning unit. Good thing is it looks like my Mach 1 controller board is compatible with the Mach12 I ordered.
Now it is just a waiting game for a week until I have the unit so see if everything bolts up and connects the way it should...
