luftdon

Luftdon is a Swedish term for an air diffusion device used in heating, ventilation and air conditioning (HVAC) systems to distribute conditioned air into a space. Installed at ceilings, walls, or floors, luftdon mix and direct supply air, influencing room comfort, air quality, and energy efficiency. They come in various forms, including diffusers with adjustable vanes (louvres) for directional discharge, perforated diffusers for diffuse spread, and grilles with fixed blades. The choice depends on room geometry, noise criteria, and desired air throw.

In operation, luftdon are connected to a ducted supply and may include dampers to regulate flow. The design aims to achieve uniform temperature distribution, minimize drafts, and control air velocity. Ceiling diffusers are common in many spaces; wall and floor diffusers may be used where ceiling height or design constraints prohibit overhead installation.

Installation considerations include proper placement to avoid short-circuiting return air, adequate airflow rates, noise levels, and ease of maintenance. Materials are typically metal or durable plastics, with finishes chosen to withstand indoor environments. Performance is influenced by diffuser size, vane configuration, and the connected duct design, all of which affect comfort and energy use.

Maintenance involves regular inspection for corrosion, clogging, or damage, and cleaning of diffuser faces to preserve performance. Luftdon designs are often covered by national HVAC standards and guidelines, with manufacturer specifications guiding selection and commissioning.