What is the recommended thickness for residential ductwork in HVAC systems?

The recommended thickness for residential ductwork in HVAC systems is 26 gauge. This thickness strikes a balance between durability and weight, making it suitable for residential applications where ease of installation and resistance to damage are important. A 26-gauge duct can withstand the positive and negative pressure conditions commonly found in HVAC systems while maintaining its shape and integrity over time.

Using thicker gauge materials, such as 24 gauge, may provide additional durability but can also increase the cost and weight of the ductwork, potentially complicating installation. Gauges that are significantly thinner, like 28 or 30 gauge, may not offer adequate strength and can be more easily damaged or deformed, which could lead to airflow issues, leaks, and reduced efficiency in the HVAC system. Therefore, 26 gauge is the optimal choice for residential ductwork due to its balance of strength, weight, and cost-effectiveness.