How often must metal straps be used to support ductwork in single-family and two-family dwellings?

In residential and light commercial HVAC applications, proper support for ductwork is critical to ensure system integrity and efficiency. The requirement for supporting metal ductwork at 64-inch intervals aligns with building codes and best practices for maintaining duct stability and preventing sagging or misalignment.

Supporting ducts appropriately is essential because improper support can lead to airflow issues and increased wear on the HVAC system due to stress on joints and connections. Additionally, adequate support helps in minimizing noise caused by vibration and improves overall system performance.

While other intervals, such as 32-inch, 48-inch, or 72-inch, are referenced in different contexts or applications, 64-inch intervals are specifically aimed at ensuring that the ducts remain secure and perform optimally in typical residential installations. Following these guidelines ensures compliance with industry standards and enhances the longevity of the ductwork system.