Which type of HVAC system uses a centralized unit to provide heating and cooling to multiple zones?

A multi-zone system is specifically designed to utilize a centralized unit, allowing for the efficient distribution of heating and cooling to multiple zones or areas within a building. This system is often configured with ductwork that branches off to various zones, enabling individual temperature control and improved energy efficiency based on the varying needs of different areas. The centralized nature of this system is advantageous for maintaining consistent comfort levels throughout a larger space.

In contrast, split systems use separate indoor and outdoor units without centralizing the unit for multiple zones. Packaged systems, while capable of serving multiple areas, typically do so with a single unit that houses all components but may not offer the same level of zoning control as a multi-zone system. Ductless systems, on the other hand, utilize individual units for each area rather than a centralized approach, making them less suitable for providing centralized heating and cooling to multiple zones. Each of these alternatives has specific applications, but when it comes to a centralized solution for multiple zones, the multi-zone system is the most appropriate choice.