I’ve become an advocate of zoned control.
This fairly simple upgrade to my heating and cooling system has most definitely paid for itself.
I looked into the idea of zone control because my house is quite large. There’s several rooms that never get used. I was paying to maintain those empty spaces at the ideal temperature. Plus, I work from home. I occupy one room while the rest of the house is empty until the kids get off the busy. I was not happy with the energy waste of keeping the whole house perfectly comfortable while I sat in my office. This system was not only very inefficient but put a lot of needless responsibility onto the furnace and air conditioner. The longer run times would eventually lead to wear and tear, malfunction and failure. I expected the project to require a complete remodeling project. I was amazed with how easily the HVAC contractor was able to access the ductwork and install a series of valves. These valves regulate airflow through the ventilation system and are controlled by separate thermostats. We now have a thermostat mounted in each room that allows us to customize the temperature. Because the thermostats include wifi connectivity, we’re able to access them through an app on our phones. I don’t need to even be on the premises to make adjustments. I am not forced to interrupt my workday to make sure the house is comfortable when the kids arrive home from school. Plus, I have the ability to target those rooms that tend to get overheated or chilly.