The A/C is part of an existing zone with the thermostat in the kitchen. It isn't ideal, but for the most part I knew the negatives before deciding on doing it this way. If we are going to be in the theater during the day I just turn on the recirculating fan and let it run. I have thought about getting a wireless thermostat and just taking it into the theater when we are using it, but so far it hasn't been a problem. In the winter though I usually just turn the thermostat off so it doesn't heat the theater when we are using it. When I had the duct work done I told the installer what the room would be used for and he sized the flex with that in mind. It cools the room off quickly when the A/C turns on, but it also heats it just as fast when the heat turns on. My last theater only had a single vent without an intake so I knew what not to do in that respect. If my theater had an outside wall I may have installed a mini-split. I just didn't want to deal with the water pump. Since my home is a single level I could always add another zone in the future and just move the flex duct in the attic. Hope this helps.