Heat rises. That’s a basic science fact you learn in elementary school. It’s also a fact you experience almost daily in a two-story house. Whether it’s winter or summer, the upper floor will be warmer than the other parts of the house when there’s no air circulation and no heating or cooling system running. An effective central air system is supposed to evenly spread comfort around the rooms so that the upper parts of the house aren’t warmer then the rest of the house.
If you’ve noticed this summer that the upper floor of your house is much hotter than it normally is when the AC is running, you may need air conditioning repair in Chapel Hill, NC to fix it. Or it may be time to make some upgrades and changes to the current HVAC system.