Originally Posted by hivoltage98
You would have to see if the units have wiring in between them. That way all the units can communicate between them. Otherwise you might not be able to do what you want with a single thermostat.
Hey hivoltage98 and thanks for the reply,
Actually what you are describing would be true for a single zone thermostat, but the one I'm looking at is a multi zone thermostat and has two connections on the back one for each of the A/Cs. There is no need to connect the A/Cs together. The thermostat acts as the link between the two. My concern is am I going to have to upgrade my control boards?? I don't think I do, but was hoping that someone might have done this update before me.