What does a zoning system do in HVAC?

A zoning system in HVAC is designed to allow for different temperature controls in separate areas of a building. This is accomplished by dividing the space into distinct zones, each with its own thermostat and control mechanisms, enabling personalized comfort and energy management.

For instance, in a multi-story building, the upper floors may experience higher temperatures due to heat rising, while the lower floors may be cooler. A zoning system can adjust the heating or cooling accordingly, ensuring that each zone maintains its desired conditions. This not only enhances comfort for occupants but also optimizes energy use by targeting heating or cooling where it is specifically needed, rather than treating the entire building uniformly at one temperature.

In contrast, while controlling humidity in restrooms, filtering air for allergy prevention, and improving overall energy efficiency may be goals of an HVAC system, they do not specifically relate to the primary function of zoning systems. Zoning focuses on temperature regulation across different areas, making option C the most accurate choice.