Are you a person who prefers to go out and buy all the latest gadgets? Or do you prefer to hang back and let other people spend the high prices while you just watch plus see what happens? Personally, I am the ladder, and I am not quick to embrace any kind of technology much less heating and A/C technology.
That being said, I have two siblings who are both into gadgetry and technology.
They both have all kinds of heating and A/C technology that I do not have. Both of them have what is called heating and A/C with zone control. Heating and A/C with zone control means that you set your air conditioning plan up so that your home is split into separate heating and cooling areas, called zones. Each one of those zones can be controlled separately from the others. In other words, you can use less air conditioning in a room that does not have people in it, for example. To illustrate, both of my siblings have two story houses and both have large homes! Yet one sibling lives with only his spouse, and the other sibling lives by himself. Therefore, it makes nice sense to turn the air conditioning off on whatever floor you are not using. At least, you can turn the control unit setting up a few degrees on whichever floor does not get the most use. That will normally be the ground floor, of course. However, when I go to visit my sibling, I normally stay in an upstairs study room, which means he has to control the control unit on the third floor. Even within the zone of the third floor, he can make the AC temperature lower in just my study room than it is in the other study rooms. It’s really kind of amazing.