There is a large cost to a system like this -- you would need to have sensors in different places around the building and sensors or motors on registers. You wo

There is a large cost to a system like this -- you would need to have sensors in different places around the building and sensors or motors on registers. You would need to give the system a layout of the building or run it through some sort of training regimen (because, I'm not sure about you, but I almost never adjust my registers). I worked on the design of a cleanroom. Even there, in a single room where we just wanted to control temp and humidity and the internal conditions never changed, it took an incredible amount of tuning to get the system to run properly. This is certainly coming, but today, I don't think most people would be willing to pay $000s for a system that still needs training and may or may not provide cost savings or comfort benefit.