Hansberger Refrigeration Blog: Your AC Repair Resource

Which Vent Cover Material Is Most Efficient During Winter?

Vent openings transfer air to and from your HVAC system. Vent covers fit within the dimensions of these openings. They’re essential for preventing large debris from entering your vents while allowing for steady airflow. Here’s a breakdown of the different vent cover materials you can choose from to help you decide the best one for your home.


Polystyrene and polypropylene are among the most commonly used plastic vent cover materials. Polystyrene offers more heat resistance, whereas polypropylene provides more resistance to impact.

The registers and grilles in your home can warp if they lack enough resistance to heat. As a result, polystyrene is best suited for covering indoor vents. On the other hand, the roof and wall vent caps outside require material that can stand up to dust, rain, and other weather elements. Polypropylene is the better option for outdoor use.


Hardwoods like maple, cherry, and oak are commonly used in wood covers. High-density machine board (HDM) is a high-quality type of wood usually used to make decorative vent covers. You can easily paint it to match your existing home decor.

Wood covers can add depth and texture to your home. They’re durable and good enough for ceiling and wall vents. However, they’re not ideal for floor vents. If you use them in the bathroom, you’ll need to ensure there’s adequate ventilation.


Metal covers are the most commonly used vent covers. The types of metal commonly used are cast aluminum, cast iron, steel, and brass. Brass, steel, and cast aluminum are resistant to rust, making them ideal for areas of your home with high humidity levels, such as bathrooms.

The strength and durability of cast metals make them suitable for floor vents. You can walk on and move furniture across these metal vent covers. However, cast metal covers are typically expensive and available in limited options.

The right vent cover for you will depend on its function and placement and your individual style. Contact us at Hansberger Refrigeration and Electric Company for all your heating and cooling needs in the Yuma area.