Hello everyone. We will be adding a second AC unit to our 3170BH within the next month. My question is about the type of unit and the thermostat wiring, if needed. I haven't dug into the roof where the vent is located, yet. I know it is setup for a second unit, but not sure of the exact setup. Do I need a self contained, non-ducted unit? Or do I need a ducted unit with its own thermostat mounted in the bedroom? Also, what unit is recommended? I see alot of talk about the Dometic Penguin II, just want to make sure we have the optimal setup for this to work best.

Thanks!!

Kevin