What you are talking about could be very different from a standard setup which means typical things like Nest may not work. Could you post some pictures of the a/c units, thermostats, and wiring behind the thermostats?
What you are talking about could be very different from a standard setup which means typical things like Nest may not work. Could you post some pictures of the a/c units, thermostats, and wiring behind the thermostats?