CSLB Class B General Contractor's License Practice Exam

What is the term for a system where a single air conditioning unit provides independent temperature control for multiple rooms?

1. Central control

2. Zonal control

3. Zone cooling

4. Multi-zone system

The correct answer is: Zonal control

The term "zonal control" refers to a system where a single air conditioning unit can independently manage the temperature in multiple rooms or areas within a building. This approach allows for different spaces to maintain different temperature settings, catering to the unique comfort needs of each room and its occupants. This system typically utilizes dampers and thermostats in each zone, allowing for efficient temperature regulation based on individual preferences or requirements. As a result, zonal control can improve energy efficiency and comfort, as it avoids the wastage of energy in spaces that may not require cooling or heating at the same level as others. The other options relate to broader concepts or do not specifically address the capability of independent temperature control in multiple rooms. For example, "central control" generally involves a centralized thermostat managing a single temperature setpoint for an entire structure. "Zone cooling" is an informal term that may refer to the same concept but lacks the specificity of the term "zonal control." "Multi-zone system" is often more associated with systems that can accommodate multiple independent zones but may not emphasize the control aspect as effectively as "zonal control."