You’ve set the thermostat to a comfortable temperature, but living areas are still too cold in the winter and too hot in the summer.
The warm air from your furnace needs a clear path into your room, so the first step is to move any furniture that might be blocking registers. Next, outfit vents with Frost King Heat/Air Deflectors, which are designed to direct warm air down for better heating. They’re available in a variety of widths to fit any register, and connect with magnets so they stay put. In the summer, just point the vents up towards the ceiling for improved cooling.