What is one benefit of an air barrier system related to HVAC systems?

An air barrier system plays a crucial role in the overall efficiency of HVAC systems by minimizing air leakage within a building. When an effective air barrier is in place, it prevents unwanted air infiltration and exfiltration, which can lead to energy losses and increased heating or cooling demands.

By maintaining a controlled indoor environment, the HVAC system doesn’t have to work as hard to compensate for the lost conditioned air. This stabilization translates into more efficient operation, as the system can maintain desired temperatures without cycling on and off excessively due to external temperature fluctuations. Consequently, home or building owners can benefit from reduced energy bills and prolonged equipment life due to less wear and tear on the HVAC system.

The other options suggest negative impacts or requirements that contradict the fundamental purpose of an air barrier system, which is to enhance building performance and efficiency. Thus, the choice highlighting the efficiency of the HVAC system is the most consistent with the benefits of having a properly installed air barrier.