I recently replaced our HVAC equipment. I used to have central HVAC that used ductwork throughout the house. The ductwork worked to get every room to the same temperature. My family plus I hated this. I have more than two sons, a picky hubby plus I am not exactly self-explanatory to get along with. The group of us could never agree on a heating or cooling setting. All of us all had a bizarre temperature preference. It seemed love all year long the people I was with and I would change the thermostat over plus over again. My hubby would constantly lower it, our oldest son would raise the temperature, our middle son would adjust the fan speed plus our youngest son would turn the HVAC off. Because the rapid fire HVAC changes were costing me money, I changed the type of HVAC the people I was with and I had. My family plus I now have ductless HVAC. The ductless mini cut has an air handler plus thermostat in each room of the house. Every room can have its own particular temperature control program. This is called HVAC zone control plus it is amazing. My household has never been so happy. Each of the youngsters control their own HVAC needs in their dining rooms… Our community areas love the dining room plus living room, are only slightly off from a single another. Everyone gets along way better now plus the zone control has really saved me money. I have particular rooms of the home that hardly get any HVAC. My youngest son rarely even turns his on too. Also, the thermostat settings are never messed with anymore.