If a single thermostat is regulating the temperature in your home, you’re probably wasting energy, especially if your home is large or has more than one level. A thermostat installed on a wall in the living room or a nearby hallway will have no problem controlling the temperature in that area. Yet, that amount of heating or cooling likely will be too little or too much for other parts of the house. That’s why many homes are switching to a zoning system, which allows independent temperature control in different parts of the house.