An air filter is a device designed to remove particles such as dust, pollen, mold, and bacteria from the air. It plays a crucial role in improving indoor air quality by trapping airborne contaminants. Air filters are commonly used in HVAC systems, air purifiers, automobiles, and industrial machines. They come in various types, including HEPA, carbon, electrostatic, and fiberglass filters. HEPA filters are especially effective, capturing up to 99.97% of microscopic particles. Carbon filters specialize in removing odors and chemical fumes. Regular replacement or cleaning of air filters ensures optimal performance and airflow. A clean air filter also enhances energy efficiency and prolongs equipment lifespan. Whether in homes, offices, or factories, air filters are essential for maintaining a healthy and safe environment.