What is the primary function of hangers in HVAC systems?

The primary function of hangers in HVAC systems is to support ductwork and pipes. Hangers are critical components that secure these elements to structural supports such as beams, walls, or the ceiling, ensuring they remain in place and function effectively within the system. Proper support minimizes stress on joints and connections, reducing the risk of leaks or system failures.

While other options address various aspects related to HVAC systems, they do not capture the primary role of hangers. For instance, protecting against corrosion is more related to materials and coatings that might be applied to ducts or pipes rather than the support structure itself. Insulation is essential for thermal efficiency but is not the purpose of hangers. Facilitating air flow pertains to the design and layout of ducts rather than their physical support. Thus, the role of hangers as essential supports is foundational to the stability and functionality of an HVAC system.