Low-E coatings are thin, transparent layers applied to glass surfaces to improve energy efficiency. They work by reflecting infrared light while allowing visible light to pass through, helping to keep indoor spaces warm in winter and cool in summer. This technology reduces the amount of heat that escapes or enters a building, leading to lower energy costs. These coatings can be found in various applications, including residential and commercial windows, skylights, and glass doors. By minimizing UV radiation, Low-E coatings also help protect furnishings and flooring from fading, making them a practical choice for energy-conscious consumers.