Vent Covers for Walls: Stylish Options for Better Airflow

Wall vent covers are amenities used in interior design. While invisible HVAC grilles are installed to blend in, wall vent covers are designed with elements of style and beauty. They serve a practical HVAC function, but the visible grille also becomes part of a room’s interior. A suitable wall vent cover needs to provide enough open area for air movement and must fitt the dimensions and purpose of the duct opening. It is ideal for wall vent covers to have an open area large enough for free movement of air. Wall supply vent covers are larger than wall return grilles and, therefore, are differently constructed. They are designed with adjustable louvers to control the volume and direction of air. Louvers of wall return grilles are always kept open. Blocking or obstructing wall return grilles adversely affects the performance of the HVVAC system.

Wall Vent Covers and Air Flow

Wall supply vents are designed to evenly distribute conditioned air in a space and wall return grilles remove air from a space and deliver it to the HVAC system. Wall supply and return grilles are constructed differently. Wall supply registers can direct air to the center of a space or to an outer area of a space. Wall supply vents can be constructed with louvers of different configurations.

Decorative Wall Vent Covers

The use of stylish wall vent covers has increased in recent years. It is practical to use a simple wall vent cover in spaces that require air control and flow. Wall vent covers are available in many materials, textures and finishes.

Linear wall vent covers have long skinny openings or multiple slats. A horizontal arrangement of slats or openings can blend with other horizontal elements found in a contemporary interior (e.g. walls, cabinets, casework, etc.) Linear wall vent covers can also be designed to have agrate openings. A grate design, as compared to a solid wall vent cover, can provide a greater open area and a less restrictive view.

Some interior designs require a wall vent cover to be as unobtrusive as possible. If a low profile design is needed, a wall vent cover can be made to be flush with the wall. Wall vent covers can also be designed to be decorative. Decorative wall vent covers should be designed to not obstruct the flow of air and, therefore, should have an opening large enough to meet the design requirements for airflow.

Material Considerations

When choosing a material for a wall vent cover, one must consider the environment and other wall surface finishes in the space. Steel wall vent covers are the most common because they can be painted to blend with the wall or other casework. Aluminum wall vent covers are a good choice in bathrooms and other moist areas because they will not rust. Resin wall covers can also be used in moist areas. 

Measurement of Wall Openings

There are a few important considerations when replacing wall vent covers. The opening of the duct work needs to be measured rather than the face plate. Face plates can be measured in height and width as well as the location of the mounting holes. The depth of the mounting surface also needs to be taken into account. A face plate can be the wrong size and/or shape and still obstruct the duct and the mounting surface.

When ordering wall vent covers, it is also important to identify the location of the openings, supply and return. Wall registers and grilles can vary in shape and size and perform different functions in the HVVAC system and therefore not always be substituted for one another.

Maintenance of Wall Vent Covers 

In order to maintain efficient airflow through the HVVAC system, wall vent covers need to be regularly cleaned. Dirt and dust can obstruct airflow through wall vent covers and grilles. When dirt and dust is thoroughly caked on wall vent covers, they should be removed and the louvers and grilles should be checked for wear and obstructing the airflow path.

Restricted intake of air through a return wall grille can obstruct the HVVAC system and therefore covers located on return wall grilles should be cleaned regularly. Covers located on wall grilles in moist, humid locations should also be cleaned regularly.

The design and the material of wall vent covers can provide a pleasant aesthetic while serving the functional purpose of controlling air flow through the HVVAC system. Wall vent covers should always be measured to ensure they will perform their intended function.

Conclusion

Wall vent covers can combine airflow control with a considered interior appearance when the correct type, size, material, and louver arrangement are selected. Supply registers need appropriate directional control, while return grilles require open airflow paths. Linear, louvered, grate, flush, wood, metal, and decorative designs provide different visual and functional options. Accurate measurement and regular cleaning complete the selection process, helping a wall vent cover perform its HVAC role without becoming an unnecessary obstruction.