Got a nagging problem with our 5-ton Trane setup. It's a 3-zone system on an older split-level (three levels) cedar shake house. The thermostats are all in a hall area, which seemed like a good idea at the time of install. However, what happens is that when a bedroom door is closed, it'll get too hot because the thermostat is not in that room. My husband tells me that the only way to fix this is to install grills/vents in all the doors, but I'm thinking there has to be another way. After all, new homes don't have all the bedroom doors vented. I don't want the kids hearing what goes on outside the bedroom, nor do I want them to hear what goes on inside the bedroom. Are there any other options? Thanks very much.