Filter

A device used in HVAC systems to trap and remove impurities like dust, pollen, mold spores, and other airborne particles from the air. Filters are crucial for maintaining indoor air quality, protecting HVAC equipment from dirt buildup, and ensuring efficient system operation. They are typically made of materials like fiberglass, pleated paper, or washable mesh and are installed where air enters the system, such as in return ducts or air handlers. Filters are available in various types, including disposable, washable, and high-efficiency models, rated using the MERV (Minimum Efficiency Reporting Value) scale to indicate their level of filtration performance.