Trying to maintain a single temperature throughout the entire apartment makes no sense.
Each room has peculiar requirements.
In my home, there are rooms with large windows that are exposed to afternoon sunlight. Those spaces tend to heat up & feel warmer than the rest of the house. With one thermostat, there is no way to focus a/c to those rooms in the Summer & back off the boiler in the winter. It would also be nice to avoid heating & cooling empty rooms to the ideal temperature. My apartment is over three thousand square feet. There are guest bedrooms that never get used. I’d like to keep my apartment gym & master bedroom much cooler than the rest of the house. In the summer, when I use the oven, it would be helpful to set a lower temperature in the kitchen. With an update to zone control, I could significantly improve comfort; Plus, there’s the chance to lower monthly utility bills. Less wear & tear on the boiler & air conditioner reduces the chance of malfunction & extends the lifespan of the equipment. The extreme weather in my local area requires either heating or cooling just about year round & adds up to about fifty percent of our energy expenses. I’ve looked into it & I can have a series of valves installed into the HVAC duct to regulate airflow. The addition of thermostats in each room would allow customized settings by way of an app on my phone. This would be super convenient, self-explanatory & helpful. I have stressed an quote for installing zone control with a local Heating, Ventilation & A/C corporation.