A properly designed fitting will achieve what result?

A properly designed fitting should primarily aim to enhance airflow within a duct system. This means that the fitting is designed in such a way that the air can move through it with minimal resistance and turbulence. Enhancing airflow is crucial for ensuring that the HVAC system operates efficiently, providing the desired level of heating or cooling while using energy effectively.

When fittings are designed with the right angles, dimensions, and shapes, they allow for a smoother transition of air compared to poorly designed fittings, which can create areas of high velocity, leading to potential disturbances in airflow patterns. While minimizing duct size, avoiding choking, and reducing noise are important considerations in specific contexts, the overarching goal of a fitting is to facilitate better airflow, which in turn can also help to avoid issues like choking and excessive noise.