What is the advantage of using aluminum versus cast iron grilles for HVAC systems?
For HVAC systems, aluminum grilles are a much better option in comparison to heavier cast iron options. From a design perspective, aluminum is a bit more versatile and easier to get painted in different colors to match wall paint or other decor.
Another benefit to aluminum grilles for HVAC systems in contrast to cast iron is that they are lighter weight and more resilient to mold, rust, and other issues that cast iron tends to attract.
Aluminum grilles are most often used in wall or ceiling applications because they are lighter in weight. Aluminum grilles are also rustproof and therefore perform better in moist locations. Also due to their lighter gray color, Aluminum grilles are easier to paint to match the surrounding environment.
