Linear diffusers are an alternative to traditional HVAC vents, distributing air through narrow ducts for even airflow and quieter ventilation. They come in various designs and materials, and must be carefully selected to match the HVAC system and building requirements.
Heating, ventilation, and air conditioning (HVAC) systems supply heated and cooled air to different areas of a home or building. Each room requires a supply and return vent, or grill, to distribute the air from the HVAC ducts into the space, then collect the exhaust air and transfer it outside. A linear diffuser serves as an effective alternative to traditional supply and exhaust vents and can even enhance the look of the room in some applications.
The average linear diffuser consists of a long narrow metal enclosure with a series of slats or grilles along a vaulted face. The installers fix the linear diffuser in an area of the ceiling, wall or window sill so that the surface of the shutter is flush with the surrounding surface. Linear diffusers work with both plasterboard structures and suspended ceilings, but different types of models may be needed to suit different applications. The most common linear speaker designs include rows of speakers along an entire wall, with vents placed in the ceiling or window sills.
Traditional supply vents have a very large and rounded design. The entire air content of each supply duct was expelled from a single vent, creating drafts and noisy conditions. In a room with linear diffusers, supply air is distributed through a series of narrow ducts so that it enters the room in several zones at the same time. This creates a much more even air distribution as well as greater comfort and quieter ventilation.
Engineers and installers must carefully select each linear diffuser to maximize airflow and ensure a comfortable and healthy building. The flaps or slots on each unit may face in different directions, which determines how air can flow from each vent. The angle and size of each of these slots should match the size of the HVAC system, as well as the required airflow for the building. The size and configuration of each fan also affects noise levels and how fast air can travel.
Several linear diffuser design options allow building owners to create the desired finish within a space. Each features a unique flange design to trim the edges of the speaker and provide a sharp transition between the speaker and the wall or ceiling. These fixtures are also available in a variety of materials and finishes, some of which can be painted to match the surrounding surfaces. Models made of stainless steel or thermoplastic often have a manufacturer-applied finish that cannot be painted.
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